this; I'd say virus types that spread via breathing tend to mutate into weaker; and virus types that are inflicted via bite tend to be strong, because bitten ones dont readily spread out of human, nor need more effective infecting as they get directly into bloodstream
this; I'd say virus types that spread via breathing tend to mutate into weaker; and virus types that are inflicted via bite tend to be strong, because bitten ones dont readily spread out of human, nor need more effective infecting as they get directly into bloodstream