ABSTRACT
During exploratory survey by Medical Entomology Research Division, Department of Medical Research to select areas for anopheline ecology studies, Tha-bye-wa village, Oktwin Township, Bago Division was found to have a very high malaria parasite rate and also high vectors density as well as a rich mosquito fauna. The results of survey carried out in momsoon season and in the cool/dry season were compared and the epidemiological situation discussed.
Subject(s)
Malaria , Seasonal Affective Disorder , MyanmarABSTRACT
Anopheles minimus is a common anopheline species in Myanmar, especially in the forested foot -hill areas. During routine survey many variations in adult morphology were noted. Iso-female lines were raised from wild-caught female and the morphological variations in F1 adults were studied. At the same time the identification of specimens was confirmed by detailed examination of larval skin slides. A guide for field workers on identification of An.minimus was also presented.
Subject(s)
Anopheles , EntomologyABSTRACT
Malaria workers in Myanmar have only recorded the prevalence of Anopheles philippinensis in the country and anopheles nivipes have not yet been identified in Myanmar. The Department of Medical Research (DMR) survey teams to Tha-bye-wa, Oktwin Township collected many specimen provisionally identified in the field as An. philippinensis. Iso-female lines were raised from wild caught female to preparelarval skin, pupal skin and adult specimens for detail morphological examination. The specimens collected from the forested foot-hill area of Tha-bye-wa was found to be An. nivipes, which was recorded for the first time in Myanmar. The distribution,seasonal prevalence, adult bionomics and larval habits for both species, as described by previous wprkers were compared with the observations of the DMR survey teams.
Subject(s)
Anopheles , Culicidae , Malaria , MyanmarABSTRACT
Entomological survey was carried out during July 1987 in a forestedfoot hill teak plantation area Tha-bye-wa village, Oktwin Township, Pegu Division. At the same time, thick and thin blood films were taken and spleen rate determined in children. The parasite rate for children under 10 years of age was 66.7
(16/24) and the infant parasite rate was 50
(2/4). The spleen rate for children 2-9 years age group was found to be 88.2
(15/17). The anopheline fauna collected was mostly made up of An. dirus, An.minimus, An. tessalatus, An. minimus was found to have occysts and one An. vagus collected biting man had sporozoites in the salivary glands. Two species of mosquitoes were also recorded for the first time in Burma. The epidemiological pattern of malaria transmission in the area and possible methodologies for control in such areas are discussed.
Subject(s)
MalariaABSTRACT
Seven isolates of blood containing Plasmodium falciparum gametocytes were collected from hospital in-patients in Yangon and the gametocytes were harvested for starch gel elecrophoresis of the following parasite isoenzymes-adenosine deaminase (ADA) (EC. 3.5.4.4), glucose phosphate isomerase (GPI) (EC. 5.3.1.9), NADP-dependent glutamate dehydrogenase (GDH) (EC. 1.4.1.4), lactate dehydrogenase (LDH) (EC. 1.1.1.27), 6-phosphogluconate dehydrogenase (6PGD) (EC>1.1.1.43), and peptidase E (PEPE) (EC.3.4.11 or 13). Variations were found in GPI, LDH and ADA. The other three isoenzymes appeared to be invariant in all the isolates. The isoenzyme patterns of gametocytes showed no marked difference from those of cultured schizonts.