Hong Kong researchers say it confirmed the risk of infection by a person with COVID-19 twice.
Sporadic accounts of people who claim they got COVID twice have been made on social media platforms. However, experts remain suspicious of this, claiming that there is no proof that this is happening.
The latest data comes from a 33-year-old man who first attracted COVID-19 in Hong Kong in March. Since developing cough, sore throat, fever and headache, he was screened for the coronavirus for 3 days. He remained in the hospital until the virus was twice checked mid-April.
The man came back to Hong Kong on the 15th of August following a brief visit to Spain and the United Kingdom, where COVID-19 cases recently reappeared. At the airport, a COVID-19 test was conducted to screen the virus for saliva. He checked for good, but had no signs this time. For screening he was admitted to the er. His viral load — the number of viruses in his body — declined over time and showed that his immune system alone was intruding.
New customers from doctors spark questions about the safety of coronavirus
My thoughts on Hong Kong reinfection report.— Vincent Rajkumar (@VincentRK) August 24, 2020
The key question is not whether COVID reinfection occurs. It is whether reinfection will be severe. I have said before that severe reinfection will be very rare, and reinfections won’t cause a repeat of the pandemic. NO need to panic pic.twitter.com/Ml0dceZDpd
The remarkable thing about his condition is that scientists sequenced the virus genome that had infected him every time he was hospitalised. This discrepancy was marginally from one infection to the next, indicating that in the 4 months between its infections the virus had transformed — or modified. It also proves that it’s possible for this coronavirus to infect the same person twice.
At a news conference on Monday the question was addressed by experts from the WHO.
A research on the case of the man is being published in the Scientific Infectious Diseases journal for publication. The results do not concern scientists, but they may have significant consequences for the development of herd immunity and efforts to improve vaccines and therapies.
“We know that people develop an immune reaction to infection. The frequency of immune response and its length is not entirely evident yet, “said Maria van Kerkhove, PhD, World Health Organisation infectious disease epidemiologist, Geneva, Switzerland.
A case report is being published in the journal Clinical Infectious Diseases for publication. Experts agree that the results may not be surprising but have significant repercussions for the production of herd immunity and attempts to improve vaccinations and therapies.
Gregory Poland, a vaccine production and immunology specialist at the Mayo clinic in Rochester, MN, says that this seems to be very direct evidence of reinfection as a result of the replication and separation of two separate viruses. “What happens is the great unknown,” he says. Further analysis is required to figure out whether this was a unusual event or anything that always occurs.
In a brief amount of time if individuals could become infected with the coronavirus, Robert Glatter, an emergency professors’ assistant professor at Lenox Hill and Northwell Health, said that several vaccines against the virus will need to be administered during the year in order to prevent the transmission of the Coronavirus.
Kamran Kadkhoda, Cleveland Clinic’s Medical Director of Immunopathology, said: “It will certainly be a challenge in public health, there is no doubt about that, particularly if there is no virus vaccine. “The preventive methods, such as ph, are the only factor in the absence of a vaccine we can fight reinfection”
Study shows that it is impossible to reinfect coronavirus
However, while doctors have anecdotally identified patients who are reinfected with coronavirus, there is no proof that people may reinfect themselves with the virus in a short time.
Marc Lipsitch, epidemiologist at the Harvard T.H. Chan School of Public Health, said: “I haven’t heard of a situation in which it is completely unambiguous illustrated.”
Poland does not want to worry anybody until we hear more about COVID-19 twice.
This also occurs in other forms of coronaviruses, which cause recurrent colds. These coronaviruses are slowly evolving every year as they travel across the world, allowing them to continue to spread and inflict their suffering.
The the flu is also the case. This is why people are vaccinated year after year against influenza and that the flu vaccine has to be changed regularly to catch up with the constantly developing influenza virus.
“For 80 years, we have been developing flu vaccines and clinical trials are under way to discover new and improved influenza vaccines,” says Poland.
The virus that triggers COVID-19 will alter this way, too. There is other evidence. A main ingredient of a SARS-CoV-2 virus — the genetic instructions for its spiky protein — has been recently used by researchers in the Howard Hughes Medical Center, New York University, to regularly infect human cells. Scientists have watched the virus kill a new batch of cells per new year. In time, copying themselves, certain genes have adapted to allow them to survive after scientists have targeted them with anticorps that neutralise them. This antibodies are a big tool for detecting or destroying a virus used by the immune system.
For example, one of the 285 individuals who tested for coronavirus positively again two months after their original positive test results (including certain persons with symptoms from CSC two months after initial diagnosis) reported that none of those freshly tested had adequate virus particles South-Korea ‘s Centro para Disease Controversia and Prevention Researchers confirmed that the patients are not actively infected with the virus, and diagnostic tests were possibly focused on death-positive particulates of the virus which remain in their bodies.
In addition , the researchers noticed that none of the patients who screened the coronavirus positive had spread the pathogen to others.
“It was pretty strong evidence of epidemiological and virological reinfection, at least in those cases,” said Columbia University virologist Angela Rasmussen.
Researchers claim that this is how antibodies function for a host of viruses in experiments that have shown that antibodies for the novel coronavirus diminish over time.
If the research left some people “scratching their heads” wondering “what an amazing mysterious virus that doesn’t contribute to a robust immunity,’ Michael Mina, an immunologist at Harvard University, said…
Any study has provided numerous results over time about the quantities of coronavirus antibodies. The findings of a related, pre-print, peer-reviewed study , for example, showed that 120 patients infected by coronavirus with mild to moderate Covid-19 symptoms had a healthy coronavirus antibodies for at least three months postinfection — and in some cases improved over time.
Moreover, if a person has not developed antibiotics for the pathogen, T-cells and B-cells may combat reinfection, public health practitioners claim. They have been contaminated with the coronaviral.
Michel Nussenzweig, head of the Rockefeller University molecular immunology laboratory, said: “Even though you don’t have very strong anticorps, you can react very quickly and nip it into your bud. “The second time you will generate a stronger … quicker result.”
In the end, Monica Gandhi, a professor of medicine at the University of California-San Francisco and associate Head of Infectious Diseases said: ‘No one believes in reinfection because there is no valid science research.’
Why do certain individuals have double the signs of Covid-19?
But why some people tend to recover from Covid-19, but have symptoms again
Clinicians claim that further testing is needed to answer that some patients appear to be ill more than once with Covid-19, but others suggest that these patients actually recur because the coronavirus lies dormant in their bodies and reemerges — a phenomenon which is seen in other viruses that also result in lifelong immunity, including the chickenpox virus.
Some researchers have also said that certain patients may suffer from a long period of infection, which improves months after the coronavirus first emerges and first show signs of Covid-19. An
Yet "there is no one who wants to absolutely discount the thought"
Although most scientists agree that they don’t believe the coronavirus may be transmitted more than once in a short amount of time, Gandhi said “no one wishes to ignore the risk of reinfection.”
And Griffin said that if researchers actually came to see two separate variants of the latest genetic code of the coronavirus in one patient’s body, two distinct diseases may be found.
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