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...physical and social environment. The number of secondary infections depends on the ability of the infectious organism to survive outside the host and to migrate from one host to the next, which in turn is contingent on biological and environmental factors. It depends on the infection–host interaction through, for instance, the duration of the infectious period. It is...

...physically block the virus from getting into or out of the cell it needs in order to replicate. That should do it. Video 4 Why different drugs are needed to treat bacterial and viral infections...Week 5: How antibiotic resistance has become such a big problem: 5.2 Wrong therapeutic use - Antibiotic resistance is more likely to develop when antibiotics are used at too low...