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Oysters contaminated with viral norovirus RNA: Ministry of Health alert



Following calls from RASFF and the Ministry of Health, the Dicastery once again issued a warning to recall the concealed oysters (Crassostrea gigas) bred in France contaminated by the Norovirus Genogroup GI marketed under the GISA brand SRL. The warning came from France, the country of origin of the molluscs, and came to Italy via the Rasff system, which sees the risk as serious.

The new reference concerns many oysters, GTO 4024, packed by GISA SRL in the Anzio (RM) plant via Colle Cocchino 1

3 / A, in 3 kg boxes. The most aggressive virus under attack is Noravirus. Pathogen for which there is currently no vaccine. Here's what it is, how it is transmitted and the symptoms. Noravirus is not a recently discovered microorganism. On the contrary, it was discovered and isolated for the first time almost half a century ago: 1972. It is a single-stranded Rna virus belonging to the Caliciviridae family. Some know it as the name Norwalk, the namesake of the city of Ohio, which recorded an epidemic in 1968.

Today, thanks to advanced methods, at least 5 genomes of Norovirus have been detected: GI, GII, GIII, GIV and GV from around 20 clusters, of which at least 3 can affect humans. The symptoms are quite typical and are usually similar to what we falsely call gut flu. In fact, it is a non-bacterial gastroenteritis (like rotavirus) that starts with severe nausea, vomiting and sometimes diarrhea. In contrast to bacterial gastroenteritis, it dissolves within a few days, the virus spreads easily in the various communities. Especially when people eat in the same place. It is therefore easy to get an infection if you eat in the cafeteria of the school, in a hotel, in a hospital, on cruise ships, in factories and in jail. It can be detected in infected waters or in raw and cold foods

On the one hand, if it lives well in the presence of oxygen, it dies at temperatures above 60 degrees. It is transmitted by oro-fecal route through saliva and vomit of the subject. Once it enters the mouth, it reaches the intestine, where it is able to replicate and develop symptoms in humans. Since it is a viral and non-bacterial infection, the use of antibiotics is not required. It is also not recommended for other types of drugs except in cases of excessively severe symptoms

Sometimes antiemetic drugs are given to reduce vomiting and anti-diarrhea. In any case, we repeat, the symptoms resolve within three to five days, even without the use of medication. For safety reasons and to ensure consumer safety, Giovanni D & # 39; agata, president of the "Rights Window". recommends that those who have purchased the product have the same amount of affiliation, NOT to consume them and return them to the point of sale, who will refund them.

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