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Yes, your immune system can recognize and protect against viruses you've been infected with in the past. That's why folks typically only get the chickenpox once. But getting a cold does NOT protect you against future colds, largely for the same reasons that a vaccine is highly unlikely (read on...). There are multiple barriers to creating a successful ...


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If I get infected once with the virus which causes a common cold, does that mean I will not get infected with the same strain of the virus ever in my lifetime? It depends on quirks of your immune system and the viral load you're exposed to, but in theory (based on vaccination and other studies), presence of the virus will trigger a suppressive response, ...


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