A key piece of the body's immune response to COVID-19 looks to have been damaged in people who caught the disease before they were vaccinated, a study published this month found.
A key piece of the body's immune response to COVID-19 looks to have been damaged in people who caught the disease before they were vaccinated, a study published this month found, resulting in a"major reduction" to part of the defense the body typically musters to fight off the virus.
"Looking at the broader swath of data, we came up with a seven-fold average reduction. But it was much larger in several of the cases. So that's a big deal," Davis said. "I think it would be probably too much of a speculation to say that this could impair responses to other viruses. But SARS-CoV-2 variants have not gone away. They're out there," he said.with viruses like hepatitis C or HIV, lingering even after infections were quelled.
, but we don't know. And there is a lot of work ongoing, and I think we will understand more about the mechanism," said Jiang. One limitation of this paper from Davis is that they relied on"peripheral" T cells in the blood. Gathering samples from elsewhere in the body — for example the lungs, where the immune response might look strongest — cannot be done with living humans.
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