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This study aimed to investigate the malaria distribution and its relationship with level of some blood parameters and plasma myeloperoxidase (MPO) in population of three localities with different altitudes.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>A total of 150 participants were recruited in each locality and facial body temperature of each was measured using a forehead digital thermometer. Blood samples were collected and used diagnose malaria parasite using the rapid test followed by Giemsa stain microscopy and have the full blood count and MPO level using a colorimetric method.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The overall prevalence of <jats:italic>falciparum<\/jats:italic> malaria was 34.7%, with no difference between the three communities, but Bambili of high altitude had the highest prevalence (70.7%). A majority of the infected persons had mild malaria, with most cases being asymptomatic (temperature\u2009&lt;\u200937.5\u00a0\u00baC). Patients had significant increase of geometric mean malaria parasite density (GMPD) in Bambili (1755\u2009\u00b1\u2009216 parasites\/\u00b5L) and Bamenda (1060\u2009\u00b1\u20092515 parasites\/\u00b5L of blood) than patients in Santa (737\u2009\u00b1\u2009799 parasites\/\u00b5L). There was a significant risk to have malaria infection in Bambili (OR\u2009=\u200933.367, p\u2009=\u20090.021) than in Santa (OR\u2009=\u20092.309, p\u2009=\u20090.362). Bambili\u2019 participants of 6\u201310\u00a0years showed a high prevalence of malaria (85.7%). GMPD was significantly different between males (p\u2009=\u20090.010) as well as females (p\u2009=\u20090.000). Participants from Santa (11.2\u2009\u00b1\u20093.2\u00a0g\/dL) and Bambili (12.6\u2009\u00b1\u20092.4\u00a0g\/dL) had a high haemoglobin concentration than those from Bamenda (10.6\u2009\u00b1\u20092.1\u00a0g\/dL). There was a significant difference in the WBC counts and platelet counts among infected participants in the study areas. MPO level had an increasing trend among infected participants in Santa (2.378\u2009\u00b1\u20090.250), Bambili (2.582\u2009\u00b1\u20090.482) and Bamenda (2.635\u2009\u00b1\u20090.466).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>The results of the present study demonstrated that altitudinal variations significant impact the risk of population to have malaria with high parasitaemia and may contribute to the malaria prevalence and severity by affecting the haemoglobin concentration, WBC and platelet level and plasma MPO in population.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12936-022-04438-6","type":"journal-article","created":{"date-parts":[[2023,1,19]],"date-time":"2023-01-19T09:04:05Z","timestamp":1674119045000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Prevalence of malaria and associated clinical manifestations and myeloperoxidase amongst populations living in different altitudes of Mezam division, North West Region, Cameroon"],"prefix":"10.1186","volume":"22","author":[{"given":"Ntonifor Helen","family":"Ngum","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ngahbort Belthine","family":"Fakeh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abongwa Edith","family":"Lem","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oumar","family":"Mahamat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,1,19]]},"reference":[{"key":"4438_CR1","unstructured":"CDC. 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