RESUMO
To analyze the working conditions and evaluate the effectiveness of blood smear examinations in fever patients after the start of national malaria elimination program (NMEP), and explore the suitable strategy for malaria diagnosis and surveillance in NMEP, so as to provide the evidence for the development and adaptation of malaria elimination strategies and measures in Jiangsu Province.The data of malaria epidemic situation reported by network, fever patients’ blood test tables, and epidemiological surveys of malaria cases were collected and statistically analyzed by SPSS 16.0 in Jiangsu Province from 2010 to 2016.A total of 2 367 cases of malaria cases were reported from 2010 to 2016. Among the 3 691 188 person-times of fever patients tested, there were 2 252 positives (0.06%). The number of blood tests of fever patients decreased from 742 900 in 2010 to 277 000 in 2016. At the same time, the positive rate increased from 0.04% in 2010 to 0.16% in 2016. The positive rate of blood tests of fever patients in 2016 was significantly higher than that in 2010 (χ2 = 161.61, P < 0.01). From 2010 to 2016 in Jiangsu province, the centers for disease control and prevention of cities and counties, that completed the blood review within 3 days, deleted 273 negative cases. In 2010, the centers for disease control and prevention of cities and counties deleted 61 negative cases, but in 2016, the centers deleted only 14 negative cases, and the negative rate of blood review in 2010 was significantly higher than that in 2016 (χ2 = 22.99, P < 0.01).A large number of blood smear examinations have been tested in fever patients in Jiangsu Province. It not only conforms to the strong monitoring system requirements issued by World Health Organization (WHO) in malaria elimination, but also provides the evidence for no local malaria case in Jiangsu since 2012.
RESUMO
Objective To understand the quality of blood smears for Plasmodium detection in Changzhou City,so as to pro?vide the technical support for malaria surveillance in the post?elimination period. Methods The blood smears of fever patients from each cities(districts)in Changzhou City in 2014,including more than 3%of the negatives and all the positives,were se?lected. The quality of the blood smear making,dyeing,cleanliness and results were reviewed by the experts from the municipal malaria microscopy station,and the data were analyzed statistically. Results Totally 996 negative blood smears were reviewed in 2014,with a review rate of 4.52%. The qualified rates of blood smear making,dyeing and cleanliness were 92.87%,93.27%and 94.48%,respectively. A total of 34 positive blood smears were reviewed,and there were no false detections and leak detec?tions. The qualified rates of blood smear making and dyeing were more than 90%in all the seven cities(districts). As for quali?fied rate of cleanliness,except the rate in Qishuyan District(81.36%),those in the other six cities(districts)were all above 90%. The qualified rates of blood smear making,dyeing and cleanliness were all more than 90%in first?class,second?class and third?class hospitals. The major quality defects of the blood smears were sediment,abnormal making and thick membrane shed?ding,and the proportions were 25.91%,21.76%and 19.17%,respectively. Conclusions The quality of blood smears for Plas?modium detection in Changzhou City is satisfying. In the future,the training and supervision still should be strengthened to guar?antee the capacity of microscopic examinations for Plasmodium detection in the surveillance of post?elimination period.