The Centers for Disease Control and Prevention (CDC) is a national public health agency in the United States.

The Wikipedia page on COVID-19 vaccine provides an overview of the various vaccines developed to combat the COVID-19 pandemic.

An inactivated vaccine (or killed vaccine) is a vaccine consisting of virus particles, bacteria, or other pathogens that have been grown in culture and then killed to destroy disease-producing capacity.

Maurice Ralph Hilleman (August 30, 1919 - April 11, 2005) was a leading American microbiologist who specialized in vaccinology and developed over 40 vaccines, an unparalleled record of productivity.

Measles is a highly contagious viral infection caused by the measles virus.

Measles vaccine protects against becoming infected with measles.

The MMR vaccine is a vaccine that helps protect individuals from three major diseases: measles, mumps, and rubella.

A neuron, also known as a nerve cell, is a fundamental unit of the nervous system.