What is infectious disease?

Understand infectious disease, from the spread of infectious disease to vaccine protection.

• Infectious disease basics
• Adult and childhood immunizations

Infection treatment

Explore treatment of common infectious diseases, such as cold and flu, and more selective infections, such as STDs and hepatitis.

• Preventing infections at home and abroad
• Cold and flu
• Hepatitis
• STDs

CHECK YOUR SYMPTOMS

• Symptom Checker: Check your medical symptoms