If we can take the foods out of the virus, why can't we take the virus out of the foods?

Question

If we can block the virus from using certain nutrients to multiply itself, why can't we use somekind of cell blocker to stop this virus overtaking the cells itself?

Answer 1

Anti-viral agents do that. There are five stages of the viral cycle which are potential targets for anti-viral compounds:
Absorption - attachment to cell or absorption in the cell
Penetration - of the cell by non-enveloped viruses
Uncoating - of the genome into the host cytoplasm (RNA viruses) or nucleus (DNA viruses)
Eclipse/Synthesis - the time from infection until the time of progeny virus production
and
Maturation/Release - The release of the virus from the cell by budding or lysis.

Answer 2

huh? We can? News to me.