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Early symptoms of paralytic shellfish poisoning include tingling of the lips and tongue that could start anywhere from a few minutes to hours after eating toxic shellfish.

“Every paralytic polio case means there are hundreds of children who are silently affected by poliovirus and are potentially carrying and spreading it throughout their communities,” she added.

No associated paralytic cases have been recorded so far.

There is no antidote to paralytic shellfish poisoning, but treatment involves supportive care and, if necessary, respiratory support.

"We find paralytic shellfish toxins in our shellfish pretty much year-round at this point."