Rather than winging it when an unusual health event crops up, health officials take a systematic approach. The goal is to quickly figure out what’s going on and squash any outbreak before it spreads.

The Marburg virus, a close cousin of Ebola, currently has no approved treatments or vaccines to protect against it.

Earlier detection and treatment of COVID-19 by health care providers in pharmacies could help prevent surges in infection rates and severe illness.

The CDC’s controversial recommendation changes are based on new studies showing that most omicron transmission takes place within five days of the onset of illness.

Bluetooth wireless communication makes it possible to track when people have been exposed to people infected with the coronavirus. The right cryptography scheme keeps alerts about exposures private.

With new US COVID-19 cases topping 200,000 a day, contact tracers are overwhelmed. Here's how infected people can start tracing and notifying contacts themselves.

With new US COVID-19 cases topping 200,000 a day, contact tracers are overwhelmed. Here's how infected people can start tracing and notifying contacts themselves.

States have been experimenting with more targeted approaches to slow the coronavirus's spread. Two strategies stand out.