Chinese oil and airline stocks have dragged the Hang Seng down and U.S.-China tensions weighed on sentiment. U.S. officials reportedly believe China covered up the Coronavirus outbreak to hoard medical supplies. President Trump has blamed Beijing and warned that U.S. deaths could top 100,000.  Billionaire investor Warren Buffett has sold off all airline positions and warns of gloomy times ahead for the aviation sector. The FDA has granted Roche approval to carry out anti-body testing. The Swiss drug maker has vowed to double its production over the coming months.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.