FAQs & Fact Sheets
Thimerosal and Vaccines
Thimerosal is a mercury-based preservative that has been used safely in vaccines for decades to prevent microbial growth …
Frequently Asked Questions about Measles
Answers to common questions about measles, the most contagious virus known to humanity
What Is an Antiviral?
Overview of antivirals—what they are, how they work, and what diseases they help treat
What Is Long COVID?
Long COVID includes a range of long-term health issues that can occur in people who have been infected with the virus that causes COVID-19
C. diff (Clostridioides difficile)
C. diff is a germ (bacterium) that causes diarrhea and colitis (inflammation of the colon). Some cases can be life-threatening
Influenza Vaccine Options: 2023-2024 Season
Annual flu vaccination is recommended for everyone age 6 months and older, and several flu vaccine options are available
Myths and Facts About Influenza (Flu)
Information debunking common myths about flu
Monoclonal Antibodies Fact Sheet (Spanish)
Spanish fact sheet provides information on monoclonal antibodies (mAbs) and the differences between vaccines and mAbs
Top 5 Reasons for Adults to Get Vaccinated for Pneumococcal Disease
Fact sheet on the importance of preventing pneumococcal disease in adults