Coronavirus antibodies may disappear 2 to 3 months after people recover, a new study found

Thomas Peter/Reuters

• Coronavirus antibodies dwindled to undetectable levels after just two or three months for 40% of asymptomatic people and 13% of symptomatic people, according to a new study.
• Overall, asymptomatic people showed "a weaker immune response" in the months after they were exposed to the coronavirus.
• A poor immune response in people who recover from the virus may not bode well for the development of an effective vaccine.
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People who develop coronavirus-fighting antibodies might not keep them very long, especially if they didn't have symptoms.

After just a few months, recovered coronavirus patients may rapidly lose antibodies — blood proteins that fight off the virus and can prevent reinfection — according to a study published Thursday in the journal Nature Medicine. The finding raises new questions about the idea of immunity passports and could be cause for concern about the development of an effective vaccine.

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