Under the Microscope

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Streptococcus agalactiae (group B Streptococcus [GBS]) has not been described as a foodborne pathogen. However, in 2015, a large outbreak of severe invasive sequence type (ST) 283 GBS infections in adults epidemiologically linked to the consumption of raw freshwater fish occurred in Singapore. We attempted to determine the scale of the outbreak, define the clinical spectrum of disease, and link the outbreak to contaminated fish.

Shirin Kalimuddin, Swaine L. Chen, Cindy T. K. Lim, Tse Hsien Koh, Thean Yen Tan, Michelle Kam, Christopher W. Wong, Kurosh S. Mehershahi, Man Ling Chau, Lee Ching Ng, Wen Ying Tang, Hishamuddin Badaruddin, Jeanette Teo, Anucha Apisarnthanarak, Nuntra Suwantarat, Margaret Ip, Matthew T. G. Holden, Li Yang Hsu, and Timothy Barkham for the Singapore Group B Streptococcus Consortium. 2015 epidemic of severe Streptococcus agalactiae ST283 infections in Singapore associated with the consumption of raw freshwater fish - A detailed analysis of clinical, epidemiological and bacterial sequencing data. CID 2017;64(S2):S145–52. doi: 10.1093/cid/cix021.