Mar 10, 2025 · COVID-19 is caused by infection with a coronavirus named SARS-CoV-2, and flu is caused by infection with one of the influenza viruses. You cannot tell the difference between …

Learn about COVID-19, the virus that causes it, how it spreads, and its variants.

Health Departments Guidance, tools, and resources for health departments to address COVID-19.

Mar 10, 2025 · CDC’s Respiratory Virus Guidance provides strategies you can use to help protect yourself and others from health risks caused by COVID-19 and other respiratory viruses.

May 8, 2025 · Testing for COVID-19 can help you decide what to do next, like getting treatment to reduce your risk of severe illness and taking steps to lower your chances of spreading the …

Sep 5, 2025 · This page provides an overview of COVID-19 data and trends over time. Other COVID-19 related data visualizations (previously on CDC’s COVID Data Tracker) are provided …

Jun 6, 2025 · The COVID-19 vaccine helps protect you from severe illness, hospitalization, and death. It is especially important to get your 2024–2025 COVID-19 vaccine if you are ages 65 …

Jun 13, 2024 · Clinical Course: Progression, Management, and Treatment What to know COVID-19 can vary from asymptomatic infection to critical illness. Symptoms and severity can change …

Jun 5, 2025 · The rates presented on the COVID-NET interactive dashboard can be used to follow trends and comparisons of COVID-19 -associated hospitalizations in different …

Jun 11, 2025 · Your risk of severe illness from COVID-19 increases as the number of your underlying medical conditions increases. Some people are at increased risk of getting very …