Months into a pandemic that has caused nearly 500,000 deaths worldwide, scientists are still trying to answer crucial questions about the coronavirus.
“It’s been very hard thus far to nail down how much of transmission is due to asymptomatic people and how much is due to people who get quite sick,” Sexton said.
It’s not yet known if COVID-19 antibodies confer any kind of immunity, but if they do, the recent results suggest that those protections may not last long — particularly among those who are asymptomatic. Dr. Daniel Kuritzkes, chief of the Division of Infectious Diseases at Brigham and Women’s Hospital in Boston, said it’s not altogether surprising that asymptomatic patients would have a more modest immune response. But, he noted one intriguing finding from the Nature Medicine study that further muddies the definition of “asymptomatic” coronavirus patients.
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