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Sri Lanka malaria maps.

Briët OJ, Gunawardena DM, van der Hoek W, Amerasinghe FP - Malar. J. (2003)

Bottom Line: The maps show that Plasmodium vivax malaria incidence has a marked variation in distribution over the island.The incidence of Plasmodium falciparum malaria follows a similar spatial pattern but is generally much lower than that of P. vivax.In the north, malaria shows one seasonal peak in the beginning of the year, whereas towards the south a second peak around June is more pronounced.

View Article: PubMed Central - HTML - PubMed

Affiliation: International Water Management Institute, Colombo, Sri Lanka. o.briet@cgiar.org

ABSTRACT

Background: Despite a relatively good national case reporting system in Sri Lanka, detailed maps of malaria distribution have not been publicly available.

Methods: In this study, monthly records over the period 1995 - 2000 of microscopically confirmed malaria parasite positive blood film readings, at sub-district spatial resolution, were used to produce maps of malaria distribution across the island. Also, annual malaria trends at district resolution were displayed for the period 1995 - 2002.

Results: The maps show that Plasmodium vivax malaria incidence has a marked variation in distribution over the island. The incidence of Plasmodium falciparum malaria follows a similar spatial pattern but is generally much lower than that of P. vivax. In the north, malaria shows one seasonal peak in the beginning of the year, whereas towards the south a second peak around June is more pronounced.

Conclusion: This paper provides the first publicly available maps of both P. vivax and P. falciparum malaria incidence distribution on the island of Sri Lanka at sub-district resolution, which may be useful to health professionals, travellers and travel medicine professionals in their assessment of malaria risk in Sri Lanka. As incidence of malaria changes over time, regular updates of these maps are necessary.

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Related in: MedlinePlus

Annual parasite incidence of Plasmodium vivax Map of the districts of Sri Lanka with annual parasite incidence (API) of P. vivax malaria cases at Medical Officer of Health (MOH) area resolution over the year 1998.
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Related In: Results  -  Collection


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Figure 1: Annual parasite incidence of Plasmodium vivax Map of the districts of Sri Lanka with annual parasite incidence (API) of P. vivax malaria cases at Medical Officer of Health (MOH) area resolution over the year 1998.

Mentions: The year 1998 was the most complete in terms of malaria case records. Figure 1 shows that the annual parasite incidence (API) of P. vivax malaria cases at MOH area resolution had marked variation over the island. Particularly, the districts of Jaffna, Kilinochchi and Mullaitivu in the north, and the district of Monaragala and the southeastern MOH areas in Ratnapura district show high malaria incidence. The API of P. falciparum (and mixed) infections (Figure 2) was generally much lower than the API of P. vivax, although the spatial distribution is somewhat similar. In the districts of Batticaloa and Ampara in the east, the proportion of P. falciparum was much lower than elsewhere in the country.


Sri Lanka malaria maps.

Briët OJ, Gunawardena DM, van der Hoek W, Amerasinghe FP - Malar. J. (2003)

Annual parasite incidence of Plasmodium vivax Map of the districts of Sri Lanka with annual parasite incidence (API) of P. vivax malaria cases at Medical Officer of Health (MOH) area resolution over the year 1998.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC183859&req=5

Figure 1: Annual parasite incidence of Plasmodium vivax Map of the districts of Sri Lanka with annual parasite incidence (API) of P. vivax malaria cases at Medical Officer of Health (MOH) area resolution over the year 1998.
Mentions: The year 1998 was the most complete in terms of malaria case records. Figure 1 shows that the annual parasite incidence (API) of P. vivax malaria cases at MOH area resolution had marked variation over the island. Particularly, the districts of Jaffna, Kilinochchi and Mullaitivu in the north, and the district of Monaragala and the southeastern MOH areas in Ratnapura district show high malaria incidence. The API of P. falciparum (and mixed) infections (Figure 2) was generally much lower than the API of P. vivax, although the spatial distribution is somewhat similar. In the districts of Batticaloa and Ampara in the east, the proportion of P. falciparum was much lower than elsewhere in the country.

Bottom Line: The maps show that Plasmodium vivax malaria incidence has a marked variation in distribution over the island.The incidence of Plasmodium falciparum malaria follows a similar spatial pattern but is generally much lower than that of P. vivax.In the north, malaria shows one seasonal peak in the beginning of the year, whereas towards the south a second peak around June is more pronounced.

View Article: PubMed Central - HTML - PubMed

Affiliation: International Water Management Institute, Colombo, Sri Lanka. o.briet@cgiar.org

ABSTRACT

Background: Despite a relatively good national case reporting system in Sri Lanka, detailed maps of malaria distribution have not been publicly available.

Methods: In this study, monthly records over the period 1995 - 2000 of microscopically confirmed malaria parasite positive blood film readings, at sub-district spatial resolution, were used to produce maps of malaria distribution across the island. Also, annual malaria trends at district resolution were displayed for the period 1995 - 2002.

Results: The maps show that Plasmodium vivax malaria incidence has a marked variation in distribution over the island. The incidence of Plasmodium falciparum malaria follows a similar spatial pattern but is generally much lower than that of P. vivax. In the north, malaria shows one seasonal peak in the beginning of the year, whereas towards the south a second peak around June is more pronounced.

Conclusion: This paper provides the first publicly available maps of both P. vivax and P. falciparum malaria incidence distribution on the island of Sri Lanka at sub-district resolution, which may be useful to health professionals, travellers and travel medicine professionals in their assessment of malaria risk in Sri Lanka. As incidence of malaria changes over time, regular updates of these maps are necessary.

Show MeSH
Related in: MedlinePlus