Analysis of epidemiological characteristics of imported malaria cases in Chongqing Municipality in 2015 / 中国血吸虫病防治杂志

ABSTRACT

Objective To analyze the laboratory diagnosis results and epidemiological characteristics of imported malaria cases in Chongqing Municipality in 2015. Methods According to the Standard Operating Procedures of Malaria Diagnosis Ref-erence Laboratory Manual,all the blood samples collected from the imported malaria patients were detected by microscopy, RDT and nest PCR. Meanwhile,the epidemiological data of the malaria cases were collected from the Parasitic Diseases Informa-tion Management System and analyzed. Results Totally 31 cases of imported malaria were reported in Chonqing Municipality in 2015,among which,there were 2 vivax malaria cases(6.45%),23 falciparum malaria cases(74.19%),5 ovale malaria cas-es(16.13%),1 malariae malaria case(3.22%). For the 5 ovale cases,three of them were confirmed as Plasmodium ovale wal-likeri infection. Among all the cases,30 cases(96.77%)were from African countries,1(3.33%)was from Southeast Asia. Thir-ty patients were male,and 1 was female. All the patients were aged from 23-61 years. There was no obvious seasonality in the case distribution. Both the medians of duration from malaria attack to first visiting a doctor and from first visiting a doctor to diag-nosis were 2 days. The medical care units that the patients first visited were mainly county-level units,while those that made the diagnosis were mainly provincial level institutes. Conclusions All the malaria cases in Chongqing in 2015 are imported,no lo-cal cases have been found,which suggests that this municipality still maintain the malaria elimination state. However,the moni-toring and management of imported malaria cases as well as the training on malaria control for related medical staff still need to be strengthened.