The World Health Organization (WHO) has classified the Wuhan Coronavirus as an international health emergency. Over 8,000 people have caught the virus in China, with 170 deaths resulting from it so far. The virus poses a risk of becoming a worldwide pandemic. The Centers for Disease Control and Prevention (CDC) reports that the spouse of one of the first U.S. cases has caught the virus, despite having never been to Wuhan. So far people in 19 countries have been affected, but no one has died outside of China. CDC director Robert Redfield said, "We understand that this may be concerning, but based on what we know now, we still believe the immediate risk to the American public is low." Source: Getty Images Markets affected by Wuhan Coronavirus Airlines are severely curtailing flights in and out of China. United (NASDAQ: UAL), American Airlines (NASDAQ: AAL) and Delta (NYSE: DAL) have suspended flights to and from China this week. United is down 13% for the year. Cruise lines have also been hit. Royal Caribbean (NYSE: RCL) is down 11%. Shares of smaller vaccination companies have soared. Vir Biotechnology (NASDAQ: VIR) is up 98% in 2020, and Novavax (NASDAQ: NVAX) is up 54%. The good news is that Chinese health authorities have sequenced the virus. The National Institute of Allergy and Infectious Diseases (NIAID) is working with Moderna (NASDAQ: MRNA) to produce a vaccine. The Coalition for Epidemic Preparedness Innovations (CEPI) is financing the effort. CEPI is also funding a vaccine from Inovio (NASDAQ: INO). Johnson & Johnson (NYSE: JNJ) is working on a vaccine as well. Sequencing the virus will speed up vaccination attempts. Anthony Fauci, director of Allergy and Infectious Diseases at the National Institute of Health, says clinical trials could begin in three months. 10 stocks we like better than Moderna INCWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Moderna INC wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of December 1, 2019 Taylor Carmichael owns shares of Novavax. The Motley Fool owns shares of and recommends Delta Air Lines. The Motley Fool recommends Johnson & Johnson. The Motley Fool has a disclosure policy.Source