Scientists say coronavirus immunity could only last up to six months. A study at the University of Amsterdam found that those who survived the coronavirus could re-inject within six months, casting doubt on the concept of “immunity passports” to allow survivors of the virus to return to normal life, according to a report published in The Science Times.For 35 years, scientists at the University of Amsterdam , led by Lia van der Hoek, regularly evaluated 10 men for four coronaviruses that cause the common cold.
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While most re-infected within three years, there were “significant” decreases in antibody levels after six months, the study found.
Protective immunity against coronavirus is short-lived, van der Hoek said.
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“We saw frequent reinfections 12 months after infection and a substantial reduction in antibody levels just six months after infection.”
Achieving herd immunity can be a challenge due to the rapid loss of protective immunity, it ended.
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