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The State

State health officials temporarily prohibited sport harvesting of mussels, clams, cockles and scallops off the coast near San Francisco because warm weather has spawned a dramatic increase in toxic organisms that cause paralytic shellfish poisoning. In years past, only mussel harvesting has been prohibited during the May 1 to Oct. 31 warm season. The ban extends from San Mateo to Sonoma counties and does not cover fish, abalone, crab or shrimp. Shellfish poisoning has killed at least 32 people since 1927, officials said.


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