Background

Malaria is a significant global public health challenge, particularly in tropical and subtropical regions. The disease is caused by five species of Plasmodium parasites known to infect humans: Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae, Plasmodium ovale and Plasmodium knowlesi [1]. In Malaysia, despite reported zero indigenous human malaria cases since 2018, due to ecological changes, particularly deforestation, there has been a rise in the exposure of humans to vectors of zoonotic Plasmodium and non-human primates, including long-tailed macaques (Macaca fascicularis) and pig-tailed macaques (Macaca nemestrina) [2]. This has led to a new trend in the transmission of P. knowlesi, a malaria parasite from simians, with cases escalating from 376 cases in 2008 to 3575 cases with 13 deaths in 2021 [3].

In Peninsular Malaysia, one of the most vulnerable communities to malaria is the indigenous minority peoples of Orang Asli. They are categorized into three main groups based on linguistic and cultural differences and are further divided into six different sub-ethnics: Negrito (i.e. Kensiu, Kintak, Jahai, Lanoh, Mendriq, Batek), Senoi (i.e. Temiar, Semai, Jah Hut, Semoq Beri, Che Wong, Mah Meri), and Proto-Malay (i.e. Temuan, Semelai, Jakun, Orang Kanaq, Orang Kuala, Orang Seletar) [4]. The Senoi population represents the largest group of the Orang Asli in Malaysia (54.9%), followed by the Proto Malay (42.3%) and Negrito (2.8%) [5]. Predominantly residing in remote and forested areas throughout Peninsular Malaysia, they are susceptible and vulnerable to malaria [2, 6]. A recent epidemiological study revealed that the prevalence of asymptomatic and submicroscopic malaria among the Temiar sub-ethnic group of Senoi in remote Peninsular Malaysia was 0.4%, with a significantly high proportion among the group of 19 to 40 years old [7]. Another recent study within the same indigenous Orang Asli communities also revealed heterogeneity in serological indices with a higher level of P. falciparum transmission based on seroconversion rate, than P. vivax in the study area [8]. Essentially, the previous studies have provided critical information on the hidden burden, age-specific vulnerability, transmission dynamics, and health inequities of malaria among the Orang Asli communities, which are essential for designing and implementing effective malaria control and elimination strategies.

One of the Senoi indigenous Orang Asli settlements (i.e. Semai sub-ethnic) of interest is Pos Lenjang in Kuala Lipis, Pahang, home to the Semai sub-ethnic group. In 2019, there was an outbreak of malaria caused by P. vivax in Pos Lenjang, affecting three of the thirteen villages, namely Kg. Pagar, Kg. Sop, and Kg. Serdang [9]. Anopheles maculatus is the most common malaria vector in the area [10, 11]. The outbreak began with imported cases through foreign workers in the area, subsequently spreading to the local communities, resulting in an attack rate of 4.1% (33 cases of P. vivax mono-infection). Once the outbreak occurred, the locality was gazetted as an Active Focus and kept under malaria surveillance for the subsequent three years. In 2020, the surveillance system managed to identify seven additional introduced infections of P. vivax in different villages of Pos Lenjang, specifically Kg. Tungau and Kg. Kenderong. Between 2021 and 2023, there were a total of eleven relapsed P. vivax malaria cases from Kg. Lenjang (5 cases), Kg. Serdang (3 cases), Kg. Tungau (2 cases), and Kg. Pagar (1 case). These patients were all treated in 2019 but relapsed again over the years. In Malaysia, all malaria blood samples have to be further tested using molecular testing, and the results showed that the P. vivax parasites in all eleven cases were similar to the P. vivax parasites in 2019 (unpublished data, Vector Borne Disease Sector, Ministry of Health, Malaysia). The experience in Kuala Lipis district, Pahang, significantly demonstrates the importance of molecular testing capacities when a country reaches the end of their malaria elimination phase.

Understanding knowledge, attitudes, and practices (KAP) towards malaria is paramount for effective malaria control and elimination strategies. Knowledge about malaria transmission, symptoms, and preventive measures is fundamental for individuals to protect themselves and seek timely treatment. Attitudes towards malaria can significantly influence health-seeking behaviour, adherence to preventive measures, and acceptance of interventions such as insecticide-treated bed nets and indoor residual spraying. Practices related to malaria, such as the use of protective measures, and treatment-seeking behaviour, directly impact malaria transmission and control efforts. Combining these three components provides a holistic understanding of how communities perceive, prevent, and manage malaria, which is crucial for designing targeted and effective interventions, especially in indigenous populations. For instance, a study in the Lihir Islands of Papua New Guinea among the indigenous people of Melanesian descent found that low utilization of bed nets despite universal coverage of insecticide-treated nets (ITNs) attributed to the low KAP level on malaria prevention in the community [12]. Similarly, a study in Chhattisgarh state in India among the aboriginal Gond tribe emphasized the need for tailored health education campaigns to improve KAP towards malaria among marginalized communities [13]. These studies collectively highlight the significance of understanding KAP towards malaria for designing effective interventions and achieving malaria control and elimination targets.

In Malaysia, numerous epidemiological studies on malaria infection have been conducted throughout the country. However, only two studies have specifically assessed the KAP towards malaria among indigenous Orang Asli communities in the past decades [6, 14]. Moreover, these two studies focused either on different sub-ethnic groups of Orang Asli or zoonotic malaria infection. Given the high vulnerability of malaria among the hard-to-reach Orang Asli communities in Malaysia, understanding their KAP towards malaria is crucial. In addition, it remains unclear whether the different levels of KAP towards malaria, the remote settlements, and the different tribes of Orang Asli could be potential factors influencing ongoing malaria transmission in the community. Therefore, this study was undertaken to investigate the KAP and the associated factors regarding malaria among community members of the Senoi indigenous Orang Asli, who reside in the remote interior part of Peninsular Malaysia.

Methods

Ethics consideration

The study protocol was approved by the Medical Research Ethics Committee of the National Institute of Health Malaysia (Reference no. NMRR ID-24-00476-KIE) and the Department of Orang Asli Development, locally known as the Jabatan Kemajuan Orang Asli (JAKOA), Ministry of Rural and Regional Development Malaysia [Reference no. JAKOA.PP.R.004 JLD 5(48)].

Study area and population

This study was conducted in Pos Lenjang (N4° 15.413ʹ E101° 32.843), a cluster of 13 small indigenous villages of the Semai sub-ethnic group of Senoi indigenous Orang Asli, located in Ulu Jelai sub-district, Kuala Lipis district of Pahang state, Peninsular Malaysia (Fig. 1). The estimated population of Pos Lenjang is 2534 people, with 490 houses (unpublished data, Lipis District Health Office, Ministry of Health, Malaysia). Situated about 90 km from Kuala Lipis town and 240 km east of Kuala Lumpur, this settlement is equipped with one government health facility (a rural clinic) and a primary school. Farming and the collection and sale of forest products are the major economic activities for the community. Farming is mostly subsistence-based, with major crops including rubber and palm oil, as well as small-scale animal husbandry. The climate is tropical monsoon, with average annual rainfall between 86 and 321 mm and temperatures ranging from 24.6 to 26.8 °C. All villages share a similar environment, being situated near forest fringes and adjacent to river basins [11].

Fig. 1
figure 1

Map of the study area. A Map of Malaysia showing the location of Pahang state (red) in Peninsular Malaysia. B Map of Kuala Lipis district (red) showing the location of Pos Lenjang (blue square) and Kuala Lipis town (blue square). C The location of a community clinic (pink square) and the six study villages (red circle) in Pos Lenjang namely, Kg. Tungau, Kg. Lenjang, Kg. Pagar, Kg. Serdang, Kg. Sop and Kg. Kenderong

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The villages in Pos Lenjang are carved out of secondary forest situated on hilly terrain, with most being riverine. Most of these villages are in remote areas, accessible only by four-wheel drive vehicles, while others can only be reached on foot. The Pos Lenjang population continues to live a semi-nomadic lifestyle. Villages in Pos Lenjang are not static, as houses and sometimes whole villages may be relocated to remain within convenient walking distance of garden crops, which are periodically moved to different places to reflect agricultural practices within traditional land tenure areas.

Study design and data collection

The community-based cross-sectional survey was conducted in six out of thirteen villages in March 2024. These villages, namely Kg. Tungau, Kg. Lenjang, Kg. Pagar, Kg. Serdang, Kg. Sop and Kg. Kenderong, were purposely selected because each had reported P. vivax cases since the malaria outbreak in 2019. A simple random sampling technique was used to select the household units included in this study. The study protocol and consent process were explained to the participants, and their voluntary consent was documented. Written informed consent was obtained from each adult participant at study registration. For the illiterate participant, written informed consent was obtained in the presence of an independent literate witness. For children and adolescents below 18 years old, written informed consent were obtained from parents or legal guardians. All residents aged 12 years and above in the selected household units were enrolled as study participants after consenting. Prior to data collection, a meeting was held between the researchers (LS, MFMJ and MKAK) and the head of villages (i.e. Tok Batin) to explain the study protocol, ensuring good participation among the community.

A validated Malay language version of a questionnaire by Munajat et al. was used to assess knowledge about malaria and their practice level regarding malaria prevention [6]. For attitude levels on malaria, a Likert scale from Tairou et al. was adopted [15], and translated into Malay. The translated questionnaire was pre-tested in another setting, the Semai tribe indigenous village in Kuala Koyan, to check for accuracy. Based on the pilot study, the questionnaire was modified. The reliability test was conducted, and the calculated Cronbach’s alpha was 0.8. Before conducting the interview, the lead researcher (LS) held a training session to brief the survey team members on each question in the questionnaire and the proper way to conduct the interviews. Eight local staffs from the Lipis District Health Office and a surveyor from the Universiti Kebangsaan Malaysia visited the selected household and conducted face-to-face interviews using Malay or the local dialect.

Sample size calculation

The number of households included in the survey was determined by using the Krejcie and Morgan Table [16]. Given that the total number of households in the selected villages was 264, with a 10% non-response rate, the final sample size is 160 households.

Data analysis

The responses collected were tabulated into a spreadsheet in Microsoft Excel (Microsoft, USA). The cleaned data was analyzed using SPSS statistical software version 27 (IBM, USA). Categorical variables were expressed as frequency and percentage, while continuous variable was presented as median with interquartile range (IQR). Chi-square or Fisher’s exact test was used to test the difference between respondent characteristics. The effect of predictive variables (age group, sex, education level, monthly income in Malaysian Ringgit (MYR), occupation, previous history of malaria infection) on good knowledge, good attitudes, and good practices was tested by using logistic regression. The level of significance was set at p < 0.05.

To assess respondent’s knowledge of malaria, three items were evaluated: correct identification of the mode of transmission, identification of the signs and symptoms of malaria, and knowledge of malaria prevention [15]. A knowledge score was calculated by summing the respondent’s score across the three domains. Only respondents who described mosquito bites as the mode of transmission were given a score of one. For knowledge of malaria symptoms, those who correctly identified the symptoms of malaria (fever, headache, body ache, rigours or chills, nausea, vomiting, diarrhoea) were given one mark for each correct answer. For knowledge of malaria prevention, respondents who identified bed nets as a means to prevent malaria were given a score of 1, and those who answered any of the following prevention measures: indoor residual spray, draining stagnant water, wearing protective clothing, using mosquito coils, taking medication, and avoiding mosquito biting times, were given a score 0.5 for each answer. The median of the total score was taken as a cutoff to categorize knowledge of malaria into two levels: poor (equal to or below the median) and good (above the median) levels of knowledge of malaria [15].

For attitudes towards malaria, six items related to the population at risk, treatment, and prevention of malaria were used. The scoring was based on a Likert scale, where strongly agree (score 5), agree (score 4), neutral (score 3), disagree (score 2), and strongly disagree (score 1). An attitude score was generated by adding up each respondent’s score across the six items. Those who scored above the median of the total score were classified as having positive attitudes, while others were classified as having negative attitudes. Meanwhile, the practice of the respondents regarding malaria prevention was defined based on the ownership and usage of ITNs. Respondents who owned ITNs and used them three or more times per week were considered to have good prevention practices, whereas those who did not possess ITNs or those who possessed them but used them less than three nights per week were considered to have poor prevention practices. To assess the overall level of each KAP category, a modified Bloom’s cut-off was adapted, using a score above 60% of correct answers to indicate a good level and a score below 60% to indicate a poor level [17].

Results

Socio-demographic characteristics of respondents

A total of 267 respondents from 160 households participated in this study. Table 1 shows the socio-demographic characteristics of the study participants. More than half of the participants were female (52.8%). The median age of the respondents was 33 years (IQR: 23–45), with most participants aged between 19 and 39 years (47.6%). Respondents with a secondary level of education constituted 41.6% of the study. The majority of the participants were self-employed, practising agriculture (40.1%) as their main source of income, and 94.4% had a monthly household income of less than MYR500, or approximately USD118. Additionally, a small percentage of respondents reported a history of malaria infection (13.9%). Of the 160 surveyed households, most houses were constructed with bamboo materials, such as walls (88.8%) and floors (88.4%), with corrugated zinc used for the roof (94.8%) (Fig. 2).

Table 1 Socio-demographic data of respondents, households and malaria control measures according to villages in Pos Lenjang, Kuala Lipis, Pahang in 2024
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Fig. 2
figure 2

A typical housing structure in the indigenous Orang Asli settlements of Pos Lenjang, Kuala Lipis, Pahang. a Kg. Tungau, b Kg. Lenjang, c Kg. Pagar, d Kg. Serdang, e Kg. Sop and f Kg. Kenderong. The photograph was taken by author ZMI

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Knowledge about malaria causes, symptoms, and prevention

Out of the 267 respondents surveyed, less than half knew the mode of transmission of malaria (46.1%), and of those, 82.1% identified mosquito bites as the mode of transmission (Table 2). Meanwhile, other factors reported by the respondents included stagnant water (9.8%), dirty surroundings (5.7%), contact with malaria patients (1.6%), and poor nutrition (0.8%). A slight majority of respondents knew about the symptoms of malaria (51.3%), and the most commonly reported symptoms were rigour (35.4%) and fever (30.6%). Similarly, a slight majority of respondents knew how to prevent malaria (52.4%), with sleeping under a bed net (58.6%) being the most reported preventive method. Other common prevention methods reported included draining stagnant water (21.8%) and applying IRS (9.2%). Furthermore, the majority of respondents indicated knowing how to manage illness (90.6%), and most respondents preferred seeking treatment immediately at a clinic (93.9%), followed by a traditional healer (4.5%). Seeking treatment by purchasing medication from the local shop was the least preferred option (0.4%). Overall, only 49.4% of the respondents had a good level of knowledge regarding malaria.

Table 2 Participant knowledge on the cause of malaria, signs and symptoms, prevention methods and care-seeking behaviour
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Attitude towards malaria

Table 3 shows respondents’ attitudes towards malaria among indigenous Orang Asli communities in Pos Lenjang. Overall, 45.7% of respondents believed that everybody could be infected by malaria. The majority believed malaria was a deadly disease (88.8%, n = 237) but that it could be prevented (77.9%, n = 208). Furthermore, most respondents also believed that malaria could be cured with medical treatment (85.8%, n = 229), that malaria testing was necessary prior to the commencement of anti-malaria treatment (82.4%, n = 220), and that it was essential to complete malaria treatment when prescribed (91.1%, n = 243). Based on attitude score calculations, 54.3% of the respondents had a good level of attitude towards malaria.

Table 3 Participant attitude towards malaria
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Practice of malaria prevention

In terms of malaria control measures, the overall level of ITN utilization and compliance for nightly usage were high in the community at 84.3% and 94.7%, respectively (Table 1). A small percentage (3.7%) of respondents reported not using any bed net. Among the reasons given were the absence of an ITN (77.8%), forgetfulness (11.1%), and feeling hot and trapped inside (11.1%). Furthermore, indoor residual spraying (IRS) by the health authority covered 95.1% of all surveyed households. Overall, 83.1% of the respondents had a good level of prevention practice against malaria (Table 2).

Factors associated with knowledge, attitude and practice on malaria

The univariate logistic regression analysis of factors associated with knowledge, attitude, and practice regarding malaria among indigenous Orang Asli communities in Pos Lenjang is presented in Tables 4, 5, and 6, respectively. In Table 4, several variables were found to be significantly associated with good knowledge, including primary education (crude odds ratio [cOR] = 2.43; 95% CI 1.25–4.72; p = 0.009), secondary education (cOR = 2.22; 95% CI 1.19–4.15; p = 0.012), previous malaria infection (cOR = 5.23; 95% CI 2.27–12.75; p < 0.001), and unemployment (cOR = 0.26; 95% CI 0.09–0.77; p = 0.015). Additionally, Table 5 shows that secondary education (cOR = 3.34; 95% CI 1.76–6.20; p < 0.001), previous malaria infection (cOR = 2.56; 95% CI 1.19–5.54; p = 0.017), and unemployment (cOR = 0.29; 95% CI 0.10–0.81; p = 0.018) were significant risk factors for a good attitude towards malaria. For practice, significant predictors of good practice regarding malaria were age between 40 and 59 years (cOR = 3.04; 95% CI 1.04–8.87; p = 0.042), secondary education (cOR = 0.42; 95% CI 0.18–0.98; p = 0.044), and involvement in collecting forest products (cOR = 0.29; 95% CI 0.09–1.00; p = 0.049), as shown in Table 6.

Table 4 Univariate analysis for predictors of participant’s level of knowledge on malaria
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Table 5 Univariate analysis for predictors of participant’s level of attitude toward malaria
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Table 6 Univariate analysis for predictors of participant’s level of practice on malaria
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Table 7 shows the final multivariate logistic regression analysis for predictors of participants’ levels of knowledge, attitude, and practice regarding malaria among the communities. The results indicated that individuals aged between 40 and 59 years (adjusted odds ratio [aOR] = 6.90; 95% CI 1.16–41.02; p = 0.034), those with primary education (aOR = 2.67; 95% CI 1.21–5.89; p = 0.015) or secondary education (aOR = 2.75; 95% CI 1.18–6.39; p = 0.019), and those with a history of malaria (aOR = 5.14; 95% CI 2.06–12.85; p < 0.001) were significantly more likely to have good knowledge about malaria. Significantly higher odds of a good attitude were also found in those with secondary education (aOR = 4.05; 95% CI 1.78–9.21; p < 0.001) and a previous history of malaria (aOR = 2.74; 95% CI 1.20–6.26; p = 0.017). Conversely, lower odds were observed for the unemployed (aOR = 0.25; 95% CI 0.08–0.79; p = 0.018) and those involved in collecting forest products (aOR = 0.25; 95% CI 0.61–0.99; p = 0.049) for attitude and practice, respectively.

Table 7 Multivariate analysis for predictors of participant’s level of knowledge, attitude and malaria on malaria
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Discussion

In Malaysia, despite achieving zero indigenous human malaria cases, efforts to eliminate the disease are being hindered by the rising number of human cases of zoonotic malaria, which the WHO has declared a public health threat [18]. Therefore, understanding the knowledge, attitudes, and practices (KAP) among susceptible and vulnerable Malaysians towards malaria is crucial. Indigenous populations, such as the Orang Asli of Peninsular Malaysia, are often at higher risk due to their proximity to forested areas where both human and zoonotic malaria persist. Ongoing KAP studies ensure that preventive measures are culturally appropriate and effective, sustaining the malaria-free status and addressing potential outbreaks swiftly. In this study, an investigation was conducted on the KAP regarding malaria among the indigenous settlement of the Semai sub-ethnic group from the Senoi indigenous Orang Asli in Pahang, Peninsular Malaysia. The results provide evidence that the level of knowledge and attitude regarding malaria was low in the communities; however, surprisingly, the level of practice was high. These findings could shed light on a potential gap between knowledge/attitude and actual behaviour regarding malaria prevention and control among the Senoi indigenous Orang Asli communities. Despite the low level of knowledge and attitude, the high level of practice indicates that there may be other factors motivating the community to engage in preventive practices.

Knowledge about malaria is crucial because it empowers individuals to take preventive measures, seek timely treatment, and reduce the spread of the disease within their communities. In this study, most of the participants acknowledged mosquito bites as the mode of transmission for malaria, aligning with other reports [6, 19, 20]. This correct identification is crucial for effective prevention and marks a significant improvement from earlier studies among the Orang Asli in Peninsular Malaysia, where many participants demonstrated misconceptions about the transmission of malaria [14]. Rigour and fever were the most commonly reported symptoms, consistent with other studies [6, 15, 19,20,21]. Despite this, the overall knowledge score about malaria transmission, symptoms, and preventive measures remained low among the study participants (49.4%). The reason could be limited access to accurate and up-to-date information about malaria in the communities studied, leading to misconceptions or outdated beliefs about the disease. Cultural beliefs and practices might also influence the perception of malaria, potentially hindering the adoption of preventive measures or prompt treatment-seeking behaviours. Addressing these factors through targeted education campaigns and community engagement could help improve knowledge and mitigate the impact of malaria in Orang Asli populations.

Furthermore, participants with primary and secondary education were twice as likely to have good knowledge about malaria, likely due to better access to health information and malaria control programs, even in remote areas [15, 22, 23]. A previous history of malaria infection was also associated with better knowledge, as those previously infected received health education during treatment, highlighting the role of personal experience in shaping health knowledge and attitudes [14]. This education may have included information about malaria transmission, symptoms, and preventive measures, which could contribute to their better knowledge about the disease compared to those who have not been infected. Having experienced the symptoms and consequences of malaria firsthand, individuals may be more motivated to learn about the disease and how to prevent future infections, leading to a better understanding of malaria. Additionally, participants aged 40 and above had better knowledge, possibly due to greater exposure to health promotion campaigns during their youth when malaria incidence was higher [24, 25]. Individuals in the older age group might be more proactive about seeking health-related information as they approach or experience common health issues associated with ageing [6], prompting them to learn more about diseases like malaria and how to prevent them.

The current findings also reveal that the overall good attitudes score towards malaria was less than 60%, indicating a low attitude among the communities. A majority of participants believed that only certain groups could get infected by malaria by chance, whereas in reality, everyone is at risk. These findings contradict the results of previous studies where the majority agreed that everyone is at risk of contracting malaria [15, 20]. This misconception could lead to participants neglecting malaria preventive measures, as they believe they are not at risk. However, attitudes towards malaria prevention, diagnosis, and treatment were promising. Education level and previous history of malaria were positively associated with good attitudes toward malaria. Participants with a secondary education level were found to be four times more likely to have good attitudes regarding malaria compared to illiterates. This aligns with other studies that show positive attitudinal changes are associated with the level of education received by participants [15]. A higher level of education fosters critical thinking and health-seeking behaviour, making educated individuals more likely to adopt and adhere to preventive measures. For instance, a study by Djoufounna et al. found that higher educational attainment was significantly associated with increased knowledge and proactive attitudes towards malaria prevention [23]. Similarly, Raghupathi et al. reported that educated individuals were more likely to engage in community health initiatives and utilize healthcare services effectively [26]. Therefore, enhancing attitudes toward malaria among indigenous Orang Asli people is vital for increasing their engagement in prevention and treatment measures, thereby decreasing the disease's prevalence and impact in their communities.

It was also found that those who were unemployed had significantly associated with low odds of having positive attitudes toward malaria. Unemployed individuals often face significant economic hardships, leading to limited access to health information and resources necessary for effective malaria prevention [27]. Economic constraints can make it difficult for them to prioritize preventive measures or attend health education sessions. The unemployed are often less educated and poorer, lacking the ability to pay out-of-pocket for cost associated with seeking treatment for illness. Previous studies show that willingness to pay is closely related to socioeconomic status which is a major health determinant [28, 29]. Moreover, unemployment is associated with lower educational attainment, further reducing awareness and understanding of malaria risks and prevention strategies [30]. Thus, social determinants such as poverty make it harder for unemployed individuals to adopt positive attitudes towards malaria prevention.

In terms of care-seeking management, most of the participants reported that they would seek treatment immediately at the clinic. This finding aligns with many other studies where prompt treatment is essential in eliminating the Plasmodium parasite from the bloodstream and preventing complications [15, 19, 20, 22]. The evolution of Orang Asli’s perception of treatment-seeking behaviour shows marked positive changes compared to the previous KAP study done among the Orang Asli 14 years ago, where the majority of indigenous people were more inclined to opt for traditional healers instead of visiting health facilities at that time [14]. The increased number of health facilities and accessibilities, accompanied by extensive health education and promotion, might contributed to the change in the behaviour. Specifically, in Pos Lenjang, the presence of a rural community clinic acts as a positive factor for the indigenous Orang Asli people to seek prompt treatment for all illnesses including malaria. Apart from that, regular visits by a dedicated mobile health team to the villages play a major role in improving health-seeking behaviour among the communities.

The present study also showed that the overall level of practice in malaria prevention was high (83.1%) among participants in Pos Lenjang. However, a gap was identified while a majority (84.3%) reported using ITNs at night, 58.6% knew that bed nets are a means of malaria prevention. The mass distribution of ITNs by the health authorities in Kuala Lipis likely contributes to the high possession and utilization rates in the community, but increasing sensitization and awareness of their benefits is needed to ensure continued use. This study also highlighted that high levels of malaria prevention practice can occur despite low to moderate levels of knowledge and attitudes towards malaria, which contradicts findings from other research showing that low levels of knowledge and attitudes typically result in low prevention practices among the community [15]. Conversely, some studies found high levels of knowledge and attitudes but low practice levels [19, 31,32,33]. It is a common practice for Orang Asli living in wooden or bamboo houses to use bed nets (ITN and non-ITN) while sleeping as the open eaves and gaps in the wall allow the mosquitoes to enter the house and bite the host during sleep, hence the practice has become an integral part of living among the community members [34]. Even though this study shows a high utilization rate of using the ITN, malaria transmission still occurs in the study area. It is important to note apart from ITN coverage, other factors such as the condition of the bed net, the number of people per bed net and the effectiveness of the impregnated insecticide influenced the degree of protection against the vector [35], therefore future implementation study on ITN is suggested. High levels of good practices suggest that effective practice can be achieved through public health interventions and community engagement, even with moderate knowledge and attitudes. One interesting finding was that forest product collectors had lower odds of adopting good malaria prevention practices, likely due to the nature of their occupation requiring overnight stays in the forest, bringing and making bed net use troublesome. This result aligns with a study done in Indonesia which found that the forest-goer groups had a higher risk of malaria but with relatively low uptake prevention practice [36]. Future research should explore detailed information on the behaviour of this target group, as they pose a major challenge in achieving the malaria elimination goal.

The strength of this study lies in its sampling method. Random sampling was used for sample selection, which reduces selection bias hence and allows the results to be confidently generalized to the study population. Additionally, the findings contribute to the limited body of literature on KAP regarding malaria among the hard-to-reach indigenous population in Peninsular Malaysia. However, some caveats should be considered. The quantitative nature of this study limits the understanding of in-depth reasoning and explanations related to malaria KAP. Further research using a qualitative approach is suggested for a better situational understanding of malaria in the study population. Moreover, the selection of six out of thirteen villages in the study setting limits the generalization of the results to the whole area. Hilly geographical terrain and exhaustive resource allocation pose a huge challenge if the research is to be conducted in all thirteen villages. Another limitation is the use of self-reported questionnaires, which are subjected to recall bias and social desirability bias.

Conclusion

This study provides evidence that although the overall level of knowledge and attitude regarding malaria is low, the level of malaria prevention practice among the indigenous Orang Asli of Pos Lenjang in Pahang is high. The education level and previous history of contracting malaria among respondents are positively associated with good knowledge and attitudes towards malaria. However, the majority of the study population remains unaware that the risk of contracting malaria is not limited to certain groups of people by chance. Besides that, only a slight majority of the respondents who use ITN understand its purpose. This lack of knowledge poses a risk of careless attitudes in practising effective malaria prevention measures and needs to be addressed. Interestingly, it was also observed that alongside the unemployed, respondents who forage in the forest are found to have lower odds of adopting good malaria prevention practices. The behaviour of this group must be studied further, as it potentially hinders the progress of malaria control and elimination strategies.