[Analysis of imported malaria situation in Liyang City, Jiangsu Province].

OBJECTIVE: To analyze the epidemic characteristics of imported malaria in Liyang City, so as to provide the evidence for formulating appropriate control strategies and measures. METHODS: The malaria epidemic situation reports, case epidemiological investigations and the follow-up materials of counterparts returned together with the cases were collected and analyzed in Liyang City from 2007 to 2014. RESULTS: Totally 53 imported malaria cases were reported and they were all laboratory confirmed in Liyang City from 2007 to 2014. Forty-nine cases (92.5%) were imported from African countries, 37 cases (69.8%) were Plasmodium falciparum infection, and 37 cases (69.8%) had overseas incidence history. Forty cases (75.5%) were aged between 30 and 49 years, and 52 cases (98.1%) were male, 42 cases (79.2%) were farmers. These cases were distributed in all the 10 towns and there were no obvious seasonal variation for onset time. The median time from onset to seeing a doctor was 3 d, and the median time from seeing a doctor to being diagnosed was 0 d. The first visit health facilities by the patients were various, and the diagnostic health facilities were all the medical institutions at the county level or above, and the standardized treatment rate was 100%. CONCLUSION: During the last 5 consecutive years, there have been no local infected malaria cases in Liyang City, and the remarkable results have been achieved in malaria elimination. However, there are still many imported malaria cases, and the infected species are diverse. Therefore, the imported malaria is still the key of malaria prevention and control.

[Surveillance of echinococcosis in Liyang City from 2008 to 2012].

OBJECTIVE: To investigate the Echinococcus infection of people and domestic animals in Liyang City, so as to provide the evidence for the establishment of control measures of echinococcosis. METHODS: The formerly confirmed cases and clue cases were investigated. The Echinococcus antibody in serum of children aged from 7 to 12 years old and adults in key towns and control towns was detected with ELISA, and the antigen in fecal samples of dogs in key towns was also detected. B ultrasound was applied to examine the ELISA positive cases, family member and the neighbored people around them. The sheep in the market were dissected and examined for Echinococcus. RESULTS: The Echinococcus antibody positive rates were 0.93% and 0.52% in children and adults, respectively. The Echinococcus antigen positive rate was 0.95% in dogs. There were no significant difference between the positive rates of the children and adults (CHI2 = 2.124, P > 0.05). No cases were found by ultrasonic examination and no Echinococcus infection was found in the sheep. CONCLUSION: The people with Echinococcus antibody in serum and dogs with antigen in their feces are found in the surveillance of echinococcosis, therefore, there exists the complete chain of transmission in local. Thus, in the prevention and control work for the disease, the monitoring of dog feces, quarantine of sheep from other regions, as well as the population health education in key areas should be strengthened.