Sonora declares sanitary closure for molluscs due to red tide
 Sonora declares sanitary closure for molluscs due to red tideThe Sonora Department of Health, through the State Commission for Protection against Sanitary Risks (COESPRISSON), has declared a sanitary precautionary ban in the Upper Gulf of California for bivalve molluscs, due to the presence of a toxin. According to the state government, the red tide currently present in the Gulf of California has reached historic levels of toxicity due to the presence of the biotoxin called saxitoxin, which contaminates bivalve molluscs and endangers the health of people consuming these products. The Bureau Against Sanitary Risks reported that in the bivalve molluscs of the area, biotoxin concentrations of up to 152,000 micrograms per kilogram have been found, a figure never before registered in the Mexican coastlines. Official Mexican Standard 242 states that the normal value of biotoxins in this type of marine animal is 800 micrograms per kilogram.
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