Novel Coronavirus (COVID-19) A novel coronavirus (SARS-CoV-2) that causes the disease Coronavirus Disease 2019 (COVID-19) emerged in a seafood and poultry market in the Chinese city of Wuhan in 2019.
How is testing for the coronavirus disease done?
The CDC recommends a COVID-19 test called a nasopharyngeal swab. The technician will put a special 6-inch cotton swab up both sides of your nose and move it around for about 15 seconds. It won't hurt, but it might be uncomfortable. They will send the swab to a lab to test the material from inside your nose
Why do the number of cases of the coronavirus disease for previous days increase?
Delays in reporting can cause the number of COVID-19 cases reported on previous days to increase. (Sometimes this effect is described as "backfill.") State, local, and territorial health departments report the number of cases that have been confirmed and share these data with CDC. Since it takes time to conduct laboratory testing, cases from a previous day may be added to the daily counts a few days late.
Is the coronavirus disease more severe than the flu?
COVID-19 causes more severe disease than seasonal influenza. While many people globally have built up immunity to seasonal flu strains, COVID-19 is a new virus to which no one has immunity. That means more people are susceptible to infection, and some will suffer severe disease. Globally, about 3.4% of reported COVID-19 cases have died. By comparison, seasonal flu generally kills far fewer than 1% of those infected.
What are the symptoms of the coronavirus disease?
Symptoms of COVID-19 include fever, cough, and shortness of breath. Like other respiratory infections, COVID-19 can vary in severity from mild to severe. When severe, pneumonia, respiratory failure, and death are possible.
Is there a coronavirus data tracker?
CDC COVID Data Tracker is a website that allows users to interact with a variety of data on COVID-19 that is updated daily. The website builds on other agency efforts – such as CDC's new weekly COVID-19 Surveillance report, COVIDView – to capture the impact the virus is having on the United States. CDC COVID Data Tracker presents data using visual dashboards that include interactive maps, graphs and other visuals. It is being developed in phases. The first phase showcases data on U.S. cases and deaths of COVID-19 and social impacts of COVID-19 disease.
What is a novel coronavirus?
A novel coronavirus is a new coronavirus that has not been previously identified. The virus causing coronavirus disease 2019 (COVID-19), is not the same as the coronaviruses that commonly circulate among humans and cause mild illness, like the common cold.