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Published on: September 30, 2021
Molecular screening of Plasmodium infections among migrant workers in Thailand
Kanyanan Kritsiriwuthinan1, Warunee Ngrenngarmlert
1Faculty of Medical Technology, Rangsit University, Patumthani, Thailand.
Background & Objective:
A cross - sectional study was conducted to determine the prevalence of Plasmodium infections among migrant workers in Thailand.
Methods:
A total of 241 migrants at Kanchanaburi, Pathumthani and Nakornpathom provinces of Thailand were recruited in our surveillance. Blood samples were examined for human malaria parasites by using microscopy and semi - nested multiplex PCR (SnM- PCR).
Results:
Laboratory diagnosis revealed 6.2% total positive rate. As compared to microscopy (26.7%), SnM- PCR was more sensitive (93.3%) for malaria. Plasmodium falciparum was predominant than P. vivax (53% : 40%, respectively). The majority of positive cases were from Myanmar workers who had low parasitaemia and without symptoms. The highest prevalence (13.7%) was found among migrant workers from Kanchanaburi province in western Thailand.
Conclusion:
These findings indicate risk of malaria transmission from migrant workers. Malaria surveillance should be included in the health- screening program for migrants in Thailand to manage this health risk.
