Increased clinician awareness can improve diagnosis, which can aid epidemiologic investigations and patient treatment. Foodborne botulism often is misdiagnosed.
Botulinum neurotoxin type A was associated with much longer hospital stays and more time spent in special care than types B or E. Hospital data indicated that 78% of patients were transferred to special care units and 70% required mechanical ventilation 7 deaths were reported. Four outbreaks resulted from commercial products, including a 2006 international outbreak caused by carrot juice.
Among all cases, 52% were caused by botulinum neurotoxin type E, but types A (24%), B (16%), F (3%), and AB (1%) also occurred 3% were caused by undetermined serotypes. Foodborne botulism in Indigenous communities accounted for 46% of all cases, which is down from 85% of all cases during 1990–2005. The mean annual incidence was 0.01 case/100,000 population. During 2006–2021, Canada had 55 laboratory-confirmed outbreaks of foodborne botulism, involving 67 cases.
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