Another name for chickenpox.

Vaccines against rabies, typhoid, cholera, and plague were developed late in this century.

A viral infection that that primarily affects the parotid glands and usually spreads through saliva.

The last documented indigenous transmission of wild poliovirus in the United States occurred in this year.

This disease has been eradicated thanks to vaccines.

The first smallpox vaccine was developed in this year.

Another name for measles.

The Pure Food and Drugs Act was passed in this year.

Consider this highly infectious disease in patients with a fever, rash, and cough, coryza and conjunctivitis.