Can You Get Covid-19 Again? It’s Very Unlikely, Experts Say (Published 2020)
Reports of reinfection instead may be cases of drawn-out illness. A decline in antibodies is normal after a few weeks, and people are protected from the coronavirus in other ways.
www.nytimes.com
The anecdotes are alarming. A woman in Los Angeles seemed to recover from Covid-19, but weeks later took a turn for the worse and tested positive again. A New Jersey doctor claimed several patients healed from one bout only to become reinfected with the coronavirus. And another doctor said a second round of illness was a reality for some people, and was much more severe.
These recent accounts tap into people's deepest anxieties that they are destined to succumb to Covid over and over, feeling progressively sicker, and will never emerge from this nightmarish pandemic. And these stories fuel fears that we won't be able to reach herd immunity — the ultimate destination where the virus can no longer find enough victims to pose a deadly threat.
But the anecdotes are just that — stories without evidence of reinfections, according to nearly a dozen experts who study viruses. "I haven't heard of a case where it's been truly unambiguously demonstrated," said Marc Lipsitch, an epidemiologist at the Harvard T.H. Chan School of Public Health.
Other experts were even more reassuring. While little is definitively known about the coronavirus, just seven months into the pandemic, the new virus is behaving like most others, they said, lending credence to the belief that herd immunity can be achieved with a vaccine.
It may be possible for the coronavirus to strike the same person twice, but it's highly unlikely that it would do so in such a short window or to make people sicker the second time, they said. What's more likely is that some people have a drawn out course of infection, with the virus taking a slow toll weeks to months after their initial exposure.
People infected with the coronavirus typically produce immune molecules called antibodies. Several teams have recently reported that the levels of these antibodies decline in two to three months, causing some consternation. But a drop in antibodies is perfectly normal after an acute infection subsides, said Dr. Michael Mina, an immunologist at Harvard University.
Many clinicians are "scratching their heads saying, 'What an extraordinarily odd virus that it's not leading to robust immunity,' but they're totally wrong,'" Dr. Mina said. "It doesn't get more textbook than this."
Antibodies are not the only form of protection against pathogens. The coronavirus also provokes a vigorous defense from immune cells that can kill the virus and quickly rouse reinforcements for future battles. Less is known about how long these so-called memory T cells persist — those that recognize other coronaviruses may linger for life — but they can buttress defenses against the new coronavirus.
Ms. Kent may not have fully recovered, even though she felt better, for example. The virus may have secreted itself into certain parts of the body — as the Ebola virus is known to do — and then resurfaced. She did not get tested between the two positives, but even if she had, faulty tests and low viral levels can produce a false negative.
Given these more likely scenarios, Dr. Mina had choice words for the physicians who caused the panic over reports of reinfections. "This is so bad, people have lost their minds," he said. "It's just sensationalist click bait."
More at the link. A good counter to the constant fear mongering about us forever living under covid. Listen to experts.
This is not a supervirus that's going to end civilization.
Also: wear a fucking mask (that covers your nose)