PubMed · 9336680
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R C Faucheux, A K Shetty, G S Cowan. 1997. Infant botulism.. https://doi.org/10.1177/000992289703601008
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Foodborne botulism (FB) results from the ingestion of food contaminated with botulinum neurotoxin. Here, we report a family outbreak of foodborne botulism caused by Clostridium botulinum subtype B2 linked to homemade pickled eggs. On August 13, 2024, the Jinan Center for Disease Control and Prevention and the Shanghe County Center for Disease Control and Prevention collaborated to investigate an outbreak of botulism poisoning related to a family gathering in Shanghe County, Jinan City. A total of 4 people attended the family gathering, three of whom developed clinical symptoms of botulism after consuming pickled eggs. The diagnosis of botulism was suspected through collaborative efforts by the Qilu Medical Prevention and Control Innovation Integration Mechanism and multidisciplinary consultations across multiple hospitals. We detected the bont gene using real-time quantitative PCR (qPCR) in Jinan CDC, determined the toxin serotype by mouse bioassay (MBA) in China CDC and performed whole-genome sequencing of bacterial strains isolated from patient feces, the homemade pickled eggs and soil in both laboratories. It was shown that the toxin type and bont gene were subtype B2, belonging to the ha gene cluster. The Clostridium botulinum strains isolated from two patients were closely related to the strains from the homemade pickled eggs through whole-genome single nucleotide polymorphism analysis. We also found that Clostridium botulinum strains from soil clustered into one branch with those from patients and food, suggesting that the source of Clostridium botulinum contamination may be from soil, although the contamination pathway was not clear. Importantly, our findings provided a basis for clinical antitoxin treatment, in which one patient successfully gave birth after recovery. These results underscore the importance of strengthening public education about the health risks associated with consuming homemade fermented or preserved foods and enhancing the laboratory detection capabilities.
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Insufficient conserved home-made products are the main cause of botulism in Denmark. We present a case of botulism caused by a commercially produced vegetable pie conserved by traditional bottling without addition of preservatives. Clostridium botulinum was grown from faeces of the index case indicating an intestinal infection. An action plan set up by the medical and veterinarian authorities functioned well and further spread of the disease was avoided. More cases of botulism may be seen in the future, if procedures ensuring proper conservation in food production are not adhered to.