[Quality analysis of malaria blood smear preparations of febrile patients in Chenzhou Prefecture, 2014].

OBJECTIVE

To standardize the malaria smear preparations of febrile patients in Chenzhou Prefecture, Hunan Province, so as to provide the technical support for malaria elimination.

METHODS

According to the Technical Solutions to Eliminate Malaria (2011 edition) , the blood smear preparations of febrile patients from each county, included more than 3% negatives and all positives, were reviewed monthly in 2014. The quality of blood smear manufacture, dyeing, cleanliness and results was reviewed by malaria microscopic examination experts. The data were analyzed with the descriptive epidemiological methods.

RESULTS

Totally 231 blood smears were reviewed in 2014 with a reviewed rate of 6.91%. The blood smear production qualified rate was 80.52%, the dyeing pass rate was 84.42%, the cleanliness pass rate was 86.58%, and there were no false detections and no leak detections. The highest blood smear production qualified rate, dyeing pass rate and cleanliness pass rate were found in Guiyang County and Linwu County, with all the rates of 100% respectively. The lowest blood smear production qualified rate and cleanliness pass rate were found in Yizhang County, with the rates of 52.94 % and 70.59% respectively. The lowest blood smear dyeing pass rate was found in Yongxing County with the rate of 63.64%. There were statistically significant differences between Guiyang County and Yizhang County in the production qualified rates and cleanliness pass rates (χ2 = 18.60, 9.73, both P < 0.01). There was a statistically significant difference between Guiyang County and Yongxing County in the dyeing pass rates (χ2 = 11.43, P < 0.01).

CONCLUSION

Through the review of blood smears, the problems will be timely discovered. Therefore, the blood smear quality should improve, which is helpful for achieving the goal of malaria elimination.