Coronavirus: Could immunity disappear in months?
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Researchers at King's College London had tested 90 people with COVID-19 repeatedly from March to June
According to the study, the infected persons had developed antibodies weeks after the infection, however, many of the antibodies disappeared two months later
According to the study, the infected persons had developed antibodies weeks after the infection, however, many of the antibodies disappeared two months later
The immune system relies on B cells and T cells to fight off a pathogen. While B cells help make antibodies and mark pathogens for destruction, T cells take care of the killing
The latter was not measured in the KCL study
The latter was not measured in the KCL study
Eric Topol, a cardiologist and the founder and director of the Scripps Research facility, said "To look at just one part of the immune response is woefully incomplete, especially if many COVID patients rely more on T cells."
It's not unusual to have a fading antibody response
When you look at something like the smallpox vaccine, you see the antibody response is down about 75% after six months. But that's a vaccine that works for decades - Virologist Shane Crotty
When you look at something like the smallpox vaccine, you see the antibody response is down about 75% after six months. But that's a vaccine that works for decades - Virologist Shane Crotty
Further, even low levels of antibodies could lead to a larger immune response later
Pamela Bjorkman—a biochemist said, "It's possible that previously-infected people could utilize responses to produce new antibodies in case they are exposed to SARS-CoV-2 again
Pamela Bjorkman—a biochemist said, "It's possible that previously-infected people could utilize responses to produce new antibodies in case they are exposed to SARS-CoV-2 again
