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Johns Hopkins experts in global public health, infectious disease, and emergency preparedness have been at the forefront of the international response to COVID-19. This website is a resource to help advance the understanding of the virus, inform the public, and brief policymakers in order to guide a response, improve care, and save lives.
- Vaccines
The coronavirus vaccines most widely used in the United...
- FAQ
The U.S. map dashboard reflects a collaboration led by the...
- About Us
The Johns Hopkins Coronavirus Resource Center (CRC) is a...
- Contact Tracing
Contact tracing is a critically important tool in pandemic...
- Testing
Testing Insights. Johns Hopkins experts are working to fill...
- Your Questions About COVID-19, Answered
Are people who wear a face covering with their nose exposed...
- Coronavirus Resource Center
The Johns Hopkins Coronavirus Resource Center established a...
- Tracking
Updated daily. U.S. Trends. Trace U.S. Pandemic Timelines....
- Vaccines
The Johns Hopkins Coronavirus Resource Center established a new standard for infectious disease tracking by publicly providing pandemic data in near real time. It began Jan. 22, 2020 as the COVID-19 Dashboard, operated by the Center for Systems Science and Engineering and the Applied Physics Laboratory.
Updated daily. U.S. Trends. Trace U.S. Pandemic Timelines. Compare cases, deaths and more since 2020 and for last 90 days. International Vaccines. View Worldwide Vaccinations. See where over 4 billion vaccinated people are located. Tracking Covid. Explore critical data.
Coronavirus (COVID-19) Information and Updates. What You Need to Know from Johns Hopkins Medicine. Johns Hopkins Medicine continues to follow the highest level of safety precautions as we care for our patients and work with our communities during the coronavirus pandemic.
- How Does The Coronavirus Spread?
- How Did The Coronavirus Start?
- What Is The Incubation Period For Covid-19?
As of now, researchers know that the coronavirus is spread through droplets and virus particles released into the air when an infected person breathes, talks, laughs, sings, coughs or sneezes. Larger droplets may fall to the ground in a few seconds, but tiny infectious particles can linger in the air and accumulate in indoor places, especially wher...
The first case of COVID-19 was reported Dec. 1, 2019, and the cause was a then-new coronavirus later named SARS-CoV-2. SARS-CoV-2 may have originated in an animal and changed (mutated) so it could cause illness in humans. In the past, several infectious disease outbreaks have been traced to viruses originating in birds, pigs, bats and other animals...
Symptoms show up in people within two to 14 days of exposure to the virus. A person infected with the coronavirus is contagious to others for up to two days before symptoms appear, and they remain contagious to others for 10 to 20 days, depending upon their immune system and the severity of their illness.
The COVID-19 vaccine lessens the severity of COVID-19 by teaching the immune system to recognize and fight the virus that causes the disease. For fall/winter 2023–2024, the updated COVID-19 vaccine is based on the XBB.1.5 variant. The updated vaccine is made by Pfizer-BioNTech, Moderna and Novavax.
Jan 14, 2021 · Are people who wear a face covering with their nose exposed at higher risk of getting COVID? In this Q&A, adapted from the December 18, episode of Public Health On Call, Josh Sharfstein, MD, and Caitlin Rivers, PhD, MPH, answer some frequently asked questions about COVID-19 and vaccines.
