Can you catch the same cold twice? Elementary and middle schoolers learn about what happens when a virus attacks their bodies, and how the immune system never forgets a virus, with an entertaining comic book. The packet includes...

Wouldn't it be lovely if people were immune from colds and flu? Alas, such is not the case; however, there are things we can do to avoid getting or spreading these pesky health hazards. Middle schoolers read articles that provide them...

Introduce infectious diseases and the epidemiologic triangle. A helpful resource describes the agent, host, and environment from the three vertices as well as the time factor, which is in the middle. Scholars complete a simple...