United flight from San Francisco is one of 8 planes put on lockdown at London Heathrow after passengers are suspected of having coronavirus

So far, the US has confirmed 15 cases of the deadly coronavirus, including the latest patient, a quarantined individual in San Antonio, Texas, diagnosed Thursday. Eight of the patients are in California, where San Francisco International Airport is one of 11 through which all flights to the US from China are being funneled to screen passengers. MORE