Millions of people worldwide carry viral infections they acquired at birth, often for life. For a long time it was assumed ...

Malaria remains a major global health concern. Recently, the World Health Organization (WHO) recommended two vaccines for use ...

If a second "novel coronavirus disease (COVID-19)" were to emerge, would we have to endure staying at home again while ...

An epidemiologist weighs in.

Herd immunity occurs when enough people in a group are immune to a specific infection that it cannot spread easily from person to person. Vaccination programs have been successful in creating herd ...