The varicella vaccine is highly effective and decreases chickenpox cases significantly. Chickenpox is contagious 1-2 days before you develop a rash and until all blisters crust over. If untreated, ...
Though most people who get chickenpox develop immunity to it, some people can get it twice. You can also get shingles, which happens when the virus that causes chickenpox reactivates. Though uncommon, ...
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