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Title: Asymptomatic malaria infections among foreign migrant workers in Thailand
Authors: Kanyanan Kritsiriwuthinan
Warunee Ngrenngarmlert
Rangsit University
Mahidol University
Keywords: Medicine
Issue Date: 1-Jul-2011
Citation: Asian Pacific Journal of Tropical Medicine. Vol.4, No.7 (2011), 560-563
Abstract: Objective: To determine the prevalence of malaria infections among foreign migrant workers in Thailand. Methods: Giemsa-stained thin and thick blood films were prepared from blood samples of 294 foreign migrant workers recruited in the study. Microscopic examination of these blood films was performed for malaria detection. Results: Blood film examination revealed 1.36% malaria infections in these 294 subjects. All positive cases were male Myanmar workers in which their blood films only ring stage of Plasmodium spp. was found at low parasite density (mean= 144 parasites/μ L of blood). The prevalence of malaria infections was not significantly different among foreign migrant workers classified by age, gender, and resident province (P > 0.05). Thin blood films of these workers also showed 78.91% hypochromic erythrocytes and 61.9% relative Eosinophilia. Conclusions: These findings indicate a high risk of malaria transmission. Therefore active malaria surveillance by using molecular methods with more sensitive and specific than microscopy should be considered for malaria control in foreign migrant workers. © 2011 Hainan Medical College.
ISSN: 19957645
Appears in Collections:Scopus 2011-2015

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