1612. Listeriosis in Mainland China: A Systematic Review

BACKGROUND: The aim of present study is to conduct a systematic review to better understand the epidemiological and clinical characteristics of listeriosis cases in mainland China. METHODS: The six most widely used Chinese and English databases were searched. Records on cases of listeriosis in mainland China reported from 2011 to 2017 were extracted. Clinical data of patients and information on clinical isolates of Listeria were collected and analyzed. RESULTS: A total of 136 records and 562 listeriosis cases were reported. The number of cases was much higher than that reported in the past decade. The 227 included non-perinatal listeriosis cases had a mortality rate of 23.78%. Of the 231 perinatal listeriosis cases, 32.68% resulted in abortion and/or newborn death. All listeriosis cases were reported as sporadic cases. Only 3 cases were traced to a meat product, while 33.12% were healthcare-associated cases. CONCLUSION: The number of listeriosis cases in China may have previously been underestimated. Perinatal cases in mainland China took a much higher proportion compared with what is usually described. Considering the high number of listeriosis patients in China, a comprehensive monitoring system for listeria is urgently needed in China. DISCLOSURES: All authors: No reported disclosures.