Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Coronavirus Deaths Rise as Health Agencies Try to Curb Its Spread Carol Pearson WASHINGTON - A new virus spreads within and outside China, and the World Health Organization has confirmed nearly 500 cases, including nearly 20 deaths. Health officials are scrambling to contain the disease, but the virus is new and not much is known about it. People from China are being screened at airports, both in their own country and abroad. They're being checked for fever and other symptoms of a new respiratory virus. The virus is a coronavirus. It's called that because under a microscope, the virus appears to be surrounded by a crown. The common cold is an example of a coronavirus and so are SARS -- severe acute respiratory syndrome -- and MERS -- Middle East respiratory syndrome. SARS originated 17 years ago at a food market in China. Scientists traced the virusto civets, catlike animals that were sold for food. MERS emerged in 2012. .