Without a vaccine, the only route to "herd immunity" to SARS-CoV-2 is through infection.

The good news is that most parents living in sanitary environments really don’t need to worry about toxocariasis. The bad news is that toxocara may be yet another obstacle placed in front of disadvantaged children.

Too much pollution can pose a health risk to anyone, but whether it is lethal or not mostly depends on the person's underlying health—and economic—status.

Scholarly research on the origins of Legionnaires' Disease.

What are the treatment options for SAD, Seasonal Affective Disorder?