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Evaluation of Malaria Blood Smears Sent to National Malaria Reference Laboratory
Selma Usluca1, Cahit Babur1, Özlem Kurtcebe2
1General Directorate of Public Health, Department of Microbiology Reference Laboratories and Biological Products, Ankara, Turkey
Objective:
Although the disease has been eliminated in Turkey malaria continues to be a threat due to increase in the number of people coming from or going to countries where the disease is endemic. In this study, we aimed to evaluate blood smears sent to the National Malaria Reference Laboratory within the malaria surveillance system.
Methods:
From March 2016 to July 2018 a retrospective study was conducted to compare the results of Malaria Reference Laboratory and Public Health Laboratories. A total of 16.827 blood stains were sent to our laboratory for approval.
Results:
In Public Health Laboratories, 315 (1.88%) of the smears were positive, 16.510 (98.12%) were negative, and in the National Malaria Reference Laboratory 252 (1.50%) were positive, 16.466 were negative. In the Public Health Laboratories, one of the two samples considered to be malaria suspected was positive in the National Malaria Reference Laboratory and one was negative. In Public Health Laboratories 35.88% of smears were P. falciparum, 27.30% were Plasmodium spp., 20.96% were P. vivax, 14.92% were mixed infection, 0.63% were P. malariae, 0.31% were P. ovale, and in the Reference Laboratory 49.60% were Plasmodium spp., 29.37% were P. falciparum, 16.27% were P. vivax, 4.36% were mixed infection, 0.40% were P. malariae.
Conclusion:
In order to malaria surveillance system to be maintained in a healthy manner, preparation, staining, coding, packaging, transportation of blood slides is very important. Also if necessary, continuing training of laboratory staff working in malaria diagnosis is crucial.
