Yes it’s possible for recovery to not confer immunity but very unlikely.

We get colds almost every year and appear to be catching the same disease repeatedly, but they are all different strains; there are about 130 different colds and you get each one once. After you’ve had them all you only get a cold when a new strain appears.

American Software Developer living in Vietnam. Classical musician (guitar, woodwinds), weightlifter, multilingual, misanthrope • XY

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