The Spread of Viral Disease in a Human Population Occurs

Question

The spread of viral disease in a human population occurs through which means?
A)mutation of existing viruses
B)transmission through travel and movement
C)handling animals that have viruses that jump the species barrier
D)not getting vaccinated against the virus
E)All of these examples can help spread a viral disease.

Accepted Answer

All of the choices listed can potentially contribute to the spread of viral diseases in human populations. Mutations of existing viruses can lead to new strains of the same virus that are more easily transmissible or more virulent. Travel and movement, particularly in crowded areas, can facilitate the spread of disease between individuals and across different geographic regions. Handling animals that have viruses that jump the species barrier can lead to zoonotic diseases, where viruses that were previously limited to animals begin to infect humans. Not getting vaccinated against the virus can also contribute to the spread of disease, as unvaccinated individuals may be more susceptible to infection and can act as potential reservoirs for transmission to others.