MedlinePlus

MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.

MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.

Alphabetical Listings

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MedlinePlus at a Glance

Offers information on health topics, human genetics, medical tests, medications, dietary supplements, and healthy recipes.
Sourced from more than 1,600 selected organizations.
Provides 40,000 links to authoritative health information in English and 18,000 links to information in Spanish.
In 2018, 277 million users viewed MedlinePlus more than 700 million times.

COVID-19 Vaccines

COVID-19 (coronavirus disease 2019) is an illness caused by a virus. This virus is a coronavirus called SARS-CoV-2. Most people with COVID-19 have mild symptoms, but some people become very sick. You can protect yourself by getting a COVID-19 vaccine. The vaccines might help keep you from getting sick from COVID-19. And if you do get sick, the vaccines can reduce your risk for:

Needing to go to urgent care or the emergency room
Getting severe illness
Being hospitalized
Dying
Getting long COVID

It's important to stay up to date with the COVID-19 vaccines. Contact your health care provider if you don't know when you need another vaccine or if you have other questions about the vaccines.

Centers for Disease Control and Prevention