Antiviral drugs, like tamiflu and relenza, that are effective against the influenza virus by preventing viral escape from host cells are called

The answer is : neuraminidase inhibitors

Explanation:

Neuraminidase inhibitors are the drugs that blocks the viral neuraminidase enzyme. These antiviral drugs are effective against both the influenza A virus and influenza B virus. The common side effect of these drugs are vomiting and nausea. Drugs like Tamiflu, Inavir, Relenza and Peramivir are the examples of Neuraminidase inhibitors.

it's unlikely a majority of a large population would agree on issues

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genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).