US stock markets suffer coronavirus relapse as outbreak spreads in US Thursday's weakness comes after the number of U.S. cases of COVID-19 climbed to 129 and the death toll ticked up to 11, including the first fatality outside Washington state. Authorities in both Washington and California declared a state of emergency because of the outbreak, which has infected at least 93,090 people worldwide and killed 3,198. More on this For more news, please go to FoxBusiness.com and watch Fox Business Network.