Infectious Diseases

Caused by bacteria, viruses, fungi, and other organisms, infectious diseases range from mild to life-threatening. They can be spread from person to person, transmitted by insects or animals, or picked up through contaminated food. Many can be prevented with vaccines.

Featured Stories

How to Avoid Buying a Fake At-Home COVID Test Online
Scammers are trying to profit from a scarcity of COVID-19 tests. These tips will help you make sure you're buying the right ones.
Does Epstein-Barr Virus Cause MS? New Research Shows EBV Infection Increases Risk of Disease
The new study shows "compelling evidence" that EBV is the leading trigger of multiple sclerosis, but experts stress that other environmental and genetic factors also matter.
Omicron-Specific Vaccines May Be Ready Soon—But How Are They Different From Current COVID Vaccines?
Two new vaccines made specifically for the Omicron variant are currently in production, but experts question whether a variant-specific vaccine is necessary right now.
How to Get Your Free N95 Masks and At-Home COVID Tests From the Government
Americans are entitled to four at-home COVID tests per household, and three N95 masks per person.

More Infectious Diseases

What Is Croup? Doctors Explain the 'Barking' Cough Found in Some Children With COVID-19

With the rise of pediatric COVID-19 cases due to the Omicron variant, children may present with this scary-sounding (but common) symptom.