Researchers at the University of Amsterdam revealed that the immunity to the coronavirus could only last for six months.
The study shows that people who recovered from the deadly bug had been re-infected six months after recovering: “Coronavirus protective immunity is short-lasting,” scientist Lia van der Hoek said. “We saw frequent reinfections at 12 months post-infection and substantial reduction in antibody levels as soon as six months post-infection. Achieving herd immunity may be challenging due to the rapid loss of protective immunity.”
Scientists have been testing a dozen of volunteers for four coronaviruses and remarked a “significant” drop in antibody levels months after recovery.