When a virus enters the body, it invades human cells and replicates (makes more copies of itself). When a virus makes copies of itself, it sometimes changes a bit. These changes are called mutations. A virus that has mutated is referred to as a variant. ----
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---- What are viral variants?
When a virus enters the body, it invades human cells and replicates (makes more copies of itself). When a virus makes copies of itself, it sometimes changes a bit. These changes are called mutations. A virus that has mutated is referred to as a variant. ----
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