You can never be sure.
Covid virus is notoriously smart for having mutation. One infection gives you immunity for six months only against that virus.
You can still get infected by a mutant virus.
It depends upon on the covid antibodies. Once you tested positive you will develop antibodies for the virus. Till the antibodies present in your body it will protect you against covid
After getting covid infection for how many days we need to be in isolation? Minimum period of self quaran
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