COVID-19 Reinfection 'Highly Unlikely' For At Least Six Months

22 Novembre, 2020, 12:51 | Auteur: Therese Cote
  • Coronavirus immunity in some people may last more than six months, early research suggests

The researchers analyzed blood samples collected at various ahses of the disease following the onset of symptoms, with some collected more than six months later.

"By studying these multiple compartments of adaptive immunity in an integrated manner, we observed that each component of SARS-CoV-2 immune memory exhibited distinct kinetics", the researchers wrote in the study.

But newer recent research on T-cells was more optimistic, suggesting a response could last for much longer.

They found that eight months after infection, most people who recovered still had enough immune cells to fight off the virus and prevent illness. The researchers said that there was about a 200-fold range in the level of antibody responses among the adults.

The scientists detected B cells in nearly all covid-19 cases. The Wu family still runs the business but makes use of its partner to secure prime locations for its restaurants, particularly in Central, Hong Kong's main business district."[James Wu] played a key role in forging the successful partnership between Maxim's and Jardines almost five decades ago, which remains strong and flourishing to this day", said an obituary by Jardine Matheson and The Dairy Farm Group in the Post on Thursday."We will greatly miss Dr Wu as a business partner and as a friend, and we would like to express our condolences to his family."More from South China Morning Post: * Hong Kong caterer Maxim's told to stay clear of courts - and cockroaches * Maxim's founder S. T. Wu dies, aged 92This article James Wu, co-founder of Hong Kong's biggest restaurant group Maxim's, targeted during protests, dies aged 98 first appeared on South China Morning PostFor the latest news from the South China Morning Post download our mobile app.

According to the news release, not only have scientists discovered how inflammatory cell death occurs - they've also found therapies to "disrupt" the process.

For the past nine months, COVID-19 has been spreading from person to person in the USA while scientists and medical professionals scramble to figure out the novel virus' patterns.

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But even if antibodies disappear, then the cells that manufacture them, called B cells, may still be around.

The antibodies being studied are those created to bind to the "spike" of the Sars-CoV-2 virus which causes Covid-19 infections. "Firstly, although most of the cases described here had mild disease, it looks as though their immunity to a second infection is reasonably high. This means that the population level of immunity may be rising which will eventually lead to reduced transmission", Evan said adding that this, coupled with immunity being conferred by vaccination, offers prospects of transmission of the virus being markedly reduced over the next year or so.

It is also good news for immunisation programmes, because if the body can provoke a long-term immune response naturally, it should also do so when triggered by a vaccine. "We do not know that for certain yet, but it is encouraging", said Evans.

Researchers also found that viral loads appear to be similar among COVID-19 patients with and without symptoms.

But the results of the study, conducted on a group of United Kingdom healthcare professionals - who are among the most at risk of compromising COVID-19 - indicate that relapse cases are rare.

" We can be sure that, at least in the short term, most people who get covid-19 will not contract it again", said Professor David Eyre, one of the authors of the research.



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