Noroviruses gemmer sig i østers

Østers betragtes som en delikatesse. Men ægte gourmeter, der kan lide at spise dem rå, fange hurtige Noroviruses. De ubehagelige gastrointestinale patogener lander på en mærkelig omvej i skaldyrens krop. Abdominal smerte, eksplosiv opkastning og svær diarré - enhver, der lider af disse symptomer og har spist nogle østers nogle få timer tidligere, kan have været inficeret med Norovirus.

Noroviruses gemmer sig i østers

Østers betragtes som en delikatesse. Men ægte gourmeter, der kan lide at spise dem rå, fange hurtige Noroviruses. De ubehagelige gastrointestinale patogener lander på en mærkelig omvej i skaldyrens krop.

Abdominal smerte, eksplosiv opkastning og svær diarré - enhver, der lider af disse symptomer og har spist nogle østers nogle få timer tidligere, kan have været inficeret med Norovirus. Virusets oprindelse er ikke de marine dyr selv, men - mennesker. Det er det, kinesiske forskere fandt ud af nu. Østersene kan ikke kun overføre de meget smitsomme vira, men tjener endda som et reservoir for patogenet, rapportere Yongjie Wang og hans team fra Shanghai Ocean University.

Norovirus udbrud i forbindelse med forbruget af østers forekommer over hele verden. I mange tilfælde bestemmes virusets genetiske sammensætning og arkiveres i en international database. Det var netop disse arkiver, som Wang og hans kolleger nu tog til. De undersøgte de genetiske oplysninger om patogenerne, der var blevet deponeret der i perioden 1983-1914, og sammenlignet med, hvordan det var det samme med viruserne fra de forskellige årganger. Den geografiske fordeling af de enkelte virusunderformer blev også dækket af forskerne.

Oprindelse: Mennesket

Det var vigtigt at indse, at 80% af østerserne i østersne kom fra mennesker, som forrådte visse dele af virusens genetiske kode. "Østersne serverer ikke kun virussen som transmissionsvej, men overlever langt i deres væv," skriver forskerne. På den måde ville dyrene blive tilflugtsstedet for vira, hvorfra de kunne invadere mennesker igen og igen.

"Østers bor hovedsagelig nær kysten. Men det er præcis, hvor mange folks deponeringsanlæg udledes i havet, "forklarer Wang. Fra et Noro-udbrud i 1993 er det endda blevet rapporteret, at fiskere, der lider af norovirus, lettet sig i vandet. Selv om menneskelige ekskrementer hovedsagelig er gode "gødninger" til marine dyr, er de risikere for forurening med patogener som Noroviruses.

Spis ikke rå

Enhver, der ikke vil forlade forbruget af skaldyr, østers og andre skaller bør ikke forbruge rå, gætte forskerne. Faktisk skal fødevarer opvarmes over 60 grader for at dræbe norovirus.

Kilde: Yongxin Yu et al. Molekylær epidemiologi af østersrelaterede humane noroviruser: Global genetisk mangfoldighed og tidsmæssig geografisk fordeling fra 1983 til 2014. Appl. Environ. Microbiol., 2015 DOI: 10.1128 / AEM.01729-15

Noroviruses gemmer sig i østers

Noroviruses gemmer sig i østers

FAQ - 💬

❓ What are the symptoms of noroviruses?

👉 The Symptoms of Norovirus

  • diarrhea.
  • vomiting.
  • nausea.
  • stomach pain.

❓ Are noroviruses contagious?

👉 Norovirus is a very contagious virus that causes vomiting and diarrhea. Anyone can get infected and sick with norovirus. You can get norovirus from: Having direct contact with an infected person.

❓ How long are noroviruses contagious?

👉 Norovirus is most infectious from the start of symptoms until 48 hours after all symptoms have stopped. You may also be infectious for a short time before and after this. You can get norovirus more than once because the virus is always changing and your body is unable to build up long-term resistance to it.

❓ What type of epidemic do noroviruses cause?

👉 Human norovirus is a small virus that contains single-stranded RNA with a protein coating. This virus is a major cause of epidemic gastroenteritis. Noroviruses are responsible for at least 95% of viral outbreaks and over 50% of all outbreaks worldwide.

❓ How long does the stomach bug last 2022?

👉 Individuals generally become ill 12 – 48 hours after exposure (swallowing norovirus). The acute phase of illness typically lasts 1 to 3 days.

❓ How do you treat norovirus at home?

👉 If you have norovirus illness, you should drink plenty of liquids to replace fluid lost from vomiting and diarrhea. This will help prevent dehydration. Dehydration can lead to serious problems. Severe dehydration may require hospitalization for treatment with fluids given through your vein (intravenous or IV fluids).

❓ What kills norovirus on surfaces?

👉 Leave the bleach disinfectant on the affected area for at least five minutes, then clean the entire area again with soap and hot water. Finish by cleaning soiled laundry, taking out the trash, and washing your hands.

❓ How can you tell difference between stomach flu and food poisoning?

👉 Onset of symptoms The stomach flu typically has about a 24 to 48 hour incubation period in your system and then starts causing symptoms. In contrast, food poisoning comes on quickly — typically about two to six hours after you've eaten spoiled food.

❓ Whats good for a stomach bug?

👉 You might find that you can eat bland, easy-to-digest foods at first, such as soda crackers, soup, oats, noodles, bananas and rice. Stop eating if your nausea returns. Avoid certain foods and substances until you feel better. These include caffeine, alcohol, nicotine, and fatty or highly seasoned foods.

❓ What are the symptoms of the stomach bug 2022?

👉 Diarrhea, vomiting, nausea, and stomach ache are the most common symptoms. Fever (usually low-grade), headache, and body aches are also reported.

❓ Does norovirus go away on its own?

👉 Norovirus infection symptoms usually last 1 to 3 days. Most people recover completely without treatment. However, for some people — especially young children, older adults and people with other medical conditions — vomiting and diarrhea can be severely dehydrating and require medical attention.


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