Frequently Asked Questions about COVID-19
COVID-19 is a contagious disease caused by the SARS-CoV-2 virus. Most people with COVID-19 have mild symptoms, but some may become severely ill.
Vaccination
Updated October 2025
Sources: American Academy of Pediatrics, American College of Obstetricians and Gynecologists, Infectious Diseases Society of America, Centers for Disease Control and Prevention, Food and Drug Administration
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2025 National Survey on Respiratory Diseases
2025 national survey on attitudes and behaviors on flu, RSV, COVID-19, and pneumococcal disease
Respiratory Immunization Graphics
Graphics and sample social posts to help raise awareness about preventing COVID-19, flu, RSV, and pneumococcal disease
What Is an Antiviral?
Overview of antivirals—what they are, how they work, and what diseases they help treat
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