Why should shellstock tags be retained for 90 days beyond the date of harvest?

Retaining shellstock tags for 90 days beyond the date of harvest is crucial primarily for the purpose of public health monitoring. This practice allows health officials to easily trace the source of shellfish if there are any reported cases of foodborne illness, such as Hepatitis A. By having detailed records of where the shellstock originated, authorities can efficiently track potential outbreaks back to their source, which is critical for both consumer safety and effective response measures.

This traceability is especially important since shellfish can be linked to illnesses due to contamination from water sources or handling practices, and the 90-day period aligns with the typical incubation time for foodborne illnesses, allowing sufficient time to investigate and respond to any health concerns. The ability to quickly identify and recall shellstock from affected sources aids in preventing further illnesses and managing public health risks effectively.