Many experts have linked immunity with reinfection. While on one hand there is no definite answer to how soon one can get reinfected, but as per data from CDC, “the latest data suggests that retesting someone in the 3 months following initial infection is not necessary unless that person is exhibiting the symptoms of COVID-19 and the symptoms cannot be associated with another illness.”
On reinfection a report from Medanta says, “Most people who are infected with the COVID-19 virus, whether or not they have symptoms, produce antibodies (proteins that fight infections) and fighter cells. For those recovered, the chances of reinfection appear to be very low in the first three months after the initial infection.”
“If you had a mild infection, didn’t get a very good immune response, and you get exposed again with a big dose of the virus, it’s definitely possible,” Dr Thomas Russo, professor and chief of infectious disease at the University at Buffalo in New York, told the media on COVID-19 reinfection.
A reinfection is possible if four months have passed since the first infection, says a UK Health Security Agency study and survey.
