Which of the following is correctly described as the origin/source of a disease:

What is autoinoculation in the context of impetigo?

Poliomyelitis is a highly infectious viral disease caused by the poliovirus. It can affect people of any age. What is the primary mode of its transmission?

Rodents are not reservoirs for which of the following bacterial diseases?

What characteristic feature is seen in the throat of individuals with diphtheria?

What defines sporadic cases of disease?

In which of the following individuals would latent infections turn into opportunistic infections?