Bad fish
Today in Morbidity and Mortality Weekly Report, researchers probe the 402 US foodborne disease outbreaks caused by marine toxins in fish and shellfish over 23 years, revealing 1,280 illnesses, 96 hospitalizations, and one death.
Scientists from the Centers for Disease Control and Prevention (CDC) and the Oak Ridge Institute for Science and Education parsed data from the CDC’s Foodborne Disease Outbreak Surveillance System (FDOSS) from 2011 to 2023.
Local, state, and territorial health
departments have voluntarily reported foodborne illness outbreaks to FDOSS
through the CDC’s National Outbreak Reporting System since 2009.
Storage of fish under uncontrolled temperatures can trigger
production of histamine, which can cause allergic responses in people, and
scombroid toxins made by bacteria with highly active enzyme histidine
carboxylase. Other marine toxins can be produced by algae and build up in fish
and shellfish through the food chain, occur naturally in fish species, or stem
from unknown sources.
The authors said that marine toxins cause most of the noninfectious outbreaks reported to FDOSS each year.
“Marine toxins that cause
foodborne illness are tasteless, odorless, resistant to cooking or freezing,
and can produce a complex variety of gastrointestinal, neurologic, and
neuropsychologic symptoms,” they wrote. “Among persons with severe illness
resulting from ingestion of marine toxins, cardiovascular and respiratory
manifestations can result in hospitalization and death.”








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