Question

which of the following diseases is not spread by droplet infection?
the common cold
botulism
diphtheria
measles
tuberculosis
question 8 (bonus) (1 point)
which of the following is not a reservoir of infection?
a sick animal
a sick person
a healthy person
none of these, all can be reservoirs
a hospital

Explanation:

• For the first question:
• The common cold is spread by droplet infection (e.g., sneezing, coughing).
• Diphtheria is spread via respiratory droplets.
• Measles is highly contagious and spread by respiratory droplets.
• Tuberculosis can be spread by droplet nuclei (small droplets that can remain airborne).
• Botulism is caused by ingestion of botulinum toxin (usually from contaminated food, not droplet infection).
• For the second question:
• A sick animal can be a reservoir (e.g., rabies in animals).
• A sick person can be a reservoir (obvious source of pathogens).
• A healthy person can be a carrier (e.g., typhoid Mary).
• A hospital can have reservoirs (e.g., in equipment, patients, etc.).

Answer:

• First question: botulism
• Second question: none of these, all can be reservoirs