Measles, mumps, chicken pox, smallpox, rabies, yellow fever, hepatitis, polio, influenza, and HIV are all ____________.

Measles, mumps, chicken pox, smallpox, rabies, yellow fever, hepatitis, polio, influenza, and HIV are all ____________.

• A. Bacteria
• B. Viruses that plague humans
• C. Fungi
• D. Parasites

Answer: (B)

These illnesses are all caused by viruses that infect humans. A virus is a tiny particle that needs a living cell to replicate, which is why antibiotics don’t treat viral infections. Vaccination and good hygiene help prevent many of these diseases. They’re not bacteria, fungi, or parasites—the other categories include bacteria (like strep), fungi (like ringworm), and parasites (like lice).

These illnesses are all caused by viruses that infect humans. A virus is a tiny particle that needs a living cell to replicate, which is why antibiotics don’t treat viral infections. Vaccination and good hygiene help prevent many of these diseases. They’re not bacteria, fungi, or parasites—the other categories include bacteria (like strep), fungi (like ringworm), and parasites (like lice).