Incidence of Streptococcus Suis in Kaeng Khro district, Chaiyaphum province from May to July 2020

Abstract

Between May 1, 2020, and July 31, 2020, Kaeng Khor hospital found 6 cases of Streptococcus Suis. The clinical manifestations were bacteremia, meningitis, and endocarditis. The aims of the study were to investigate whether this incidence was a cluster outbreak or not, and to active cases finding. A cross-sectional study was conducted by reviewing the medical records, and the specimens of pork from 9 shops in the Kaeng Khro sub-district-municipal area were collected. Laboratory testing for Streptococcus Suis was done by culture method. The result revealed that 2 cases had a history of having raw pork together in the Nong Kham sub-district. Those were identified as cluster outbreaks, but 4 cases were not identified. Case number 3 and 4 bought raw pork from the food-motorcycle in Kao Ya Dee and     Na Nong Thum sub-district. Those consumed raw pork on May 22, 2020, and June 14, 2020, respectively. Case number 5 consumed Nham or sour pork that was purchased from another province. Currently, case number 6 finding the source of infection. The incubation period of the disease in this study was 3 days (±2). One in five persons were reported as Streptococcus Suis patient when using the definition of exposure. Laboratory results of Streptococcus Suis were no growth in all specimens. The announcement by public broadcast in each sub-district for encouraging the local population to avoid consuming raw pork was the measurement to prevent the incidence in the future.