Antibodies to COVID-19 may disappear in some patients in as little as 2 months, according to a new study. As ABC News reported, the findings may dash hopes that so-called “immunity passports” could allow individuals to travel freely.
Antibodies are proteins produced by the body’s immune system as protection against pathogens such as viruses or bacteria. When a person is sickened by a virus, or administered an inactive or weakened pathogen via a vaccine, the body produces antibodies, which can then fight off the pathogen should it re-infect the patient later.
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