Mapping hypoendemic, seasonal malaria in rural Bandarban, Bangladesh: a prospective surveillance

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ID: 104632
2011
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Abstract

Abstract

Background

Until recently the Chittagong Hill tracts have been hyperendemic for malaria. A past cross-sectional RDT based survey in 2007 recorded rates of approximately 15%. This study was designed to understand the present epidemiology of malaria in this region, to monitor and facilitate the uptake of malaria intervention activities of the national malaria programme and to serve as an area for developing new and innovative control strategies for malaria.

Methods

This research field area was established in two rural unions of Bandarban District of Bangladesh north of Bandarban city, which are known to be endemic for malaria due to Plasmodium falciparum. The project included the following elements: a) a demographic surveillance system including an initial census with updates every four months, b) periodic surveys of knowledge attitude and practice, c) a geographic information system, d) weekly active and continuous passive surveillance for malaria infections using smears, rapid tests and PCR, f) monthly mosquito surveillance, and e) daily weather measures. The programme included both traditional and molecular methods for detecting malaria as well as lab methods for speciating mosquitoes and detecting mosquitoes infected with sporozoites.

Results

The demographic surveillance enumerated and mapped 20,563 people, 75% of which were tribal non-Bengali. The monthly mosquito surveys identified 22 Anopheles species, eight of which were positive by circumsporozoite ELISA. The annual rate of malaria was close to 1% with 85% of cases in the rainy months of May-October. Definitive clustering identified in the low transmission season persisted during the high transmission season.

Conclusion

This demographically and geographically defined area, near to the Myanmar border, which is also hypoendemic for malaria, will be useful for future studies of the epidemiology of malaria and for evaluation of strategies for malaria control including new drugs and vaccines.

Reference Key
gregory2011mappingmalaria Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gregory, Glass;Douglas, Norris;Myaing, Nyunt;Jasmin, Akter;Malathi, Ram;Jacob, Khyang;Rashidul, Haque;Mohammad, Alam;Chai, Prue;Sabeena, Ahmed;A, Sack David;A, Khan Wasif;Timothy, Shields;Md, Haq;Alejandro, Cravioto;J, Sullivan David;
Journal malaria journal
Year 2011
DOI
DOI not found
URL
http://www.malariajournal.com/content/10/1/124
Keywords
Microbiology Infectious and parasitic diseases Biology (General) Medicine Science neoplasms. tumors. oncology. including cancer and carcinogens arctic medicine. tropical medicine genetics cytology

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