Fauci said he's 'willing to bet anything' that people who recover from the new coronavirus are 'really protected from reinfection'
- Anthony Fauci, one of the top US experts on infectious disease, is the face of America's coronavirus response team.
- When asked by Comedy Central's "The Daily Show" host Trevor Noah whether people who are infected with COVID-19 and recover from the disease are immune to reinfection, Fauci in an interview Thursday responded that, while experts can't be 100% sure, he feels "really confident" that recovered coronavirus patients will have immunity.
- Fauci added that he'd be "willing to bet anything that people who recover are really protected against re-infection."
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Dr. Anthony Fauci, one of the top US experts on infectious disease, has guided the US through the AIDS, Zika, and Ebola epidemics, shared an optimistic message this week as he leads the country's response to the coronavirus outbreak.During a recent interview with Comedy Central's "The Daily Show" host Trevor Noah, Dr. Fauci was asked whether people who are infected with COVID-19 and recover from the disease are immune to reinfection. Scientists are still working to answer this question, which could play a crucial role in decisions about whether to let people who have recovered out of lockdown.
Immunity to the coronavirusWhile there are still many unknowns about the coronavirus, Noah's question to Fauci is among the most important lingering mysteries about the virus that has spread to at least 177 countries and infected more than 615,000 people.
One of the reasons the illness has spread so quickly is because it's a new virus our bodies have not encountered before - so we have no built-in immunity. The immune system has to develop antibodies - proteins that fight a specific antigen - before we become protected.Generally, once your body has antibodies that know how to fight off a particular invader, you can't get sick from it again. That's why someone who had chickenpox or got the vaccine won't get the disease twice. Fauci told Noah that "if this virus acts like every other virus that we know, once you get infected, get better, clear the virus, then you'll have immunity that will protect you against re-infection."
So far, the number of recovered coronavirus patients - 135,700 - is about one-fifth the number of infected.
Further research is needed to confirm Fauci's statementFauci told Noah that more research is needed to confirm whether recovered coronavirus patients have been protected. "We don't know that for 100% certain because we haven't done the study," said Fauci, who's worked in the public health sector for more than half his life and has been the director of the National Institute of Allergy and Infectious Diseases (NIAID) since 1984, advising six presidents.
In one March study (which has yet to be peer-reviewed), a group of scientists infected rhesus macaques with the novel coronavirus, let them recover, then tried to reinfect them. The first infection gave some of the monkeys a mild illness, resulting in moderate pneumonia and weight loss, but the second did not seem to affect any of them.
A month prior however, a report from Japan revealed that a tour guide had recovered from the coronavirus, then tested positive for it again three weeks later. Doctors aren't sure if she was reinfected or had not fully recovered from the first infection.
These "antibodies have neutralization activities and provide protection against infections," the researchers wrote. They're an indicator that these recovered patients had some immunity to SARS, they added, but it's unclear if those antibodies provide "complete protection" from reinfection years later.Because the new coronavirus shares 79.5% of its genetic code with SARS, it's possible that the antibodies for the new coronavirus might behave similarly.
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