
Flu Illness
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What Is influenza B and how are they different? Do Infections cause worse illness in children than A infections cause? influenza type B, milder than type A; type C, which has never A, B, C. Type is the most common and also the scariest Flu; A; B. Definition Return to top In temperate climates, influenza A usually arrives between early winter early spring. B viruses evolve slower than A viruses faster than C viruses".[5] B virus evolution: co-circulating lineages and comparison of . .