rotavirus: 10 virions can infect; kills 440,000 annually
influenza: usually >7 days
rubella: bad in 10-16 weeks pregnancy
norovirus kills 50,000 annual
polio: bad in 1 in 1,000; non paralytic is meningitis; 5% paralytic is fatal; became a problem when maternal immunity decreased through hygiene; 1/million live vaccine cause paralytic; still in pakistan and afghanistan
— Feb 16, 2026 04:39PM
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