In this Feb. 13, 2020, photo released by Xinhua News Agency, workers wearing masks labor at a factory for Chinese telecommunications company OPPO in Dongguan, in southern China's Guangdong Province. Factories in China, struggling to reopen after the coronavirus shut down the economy, face a new threat from U.S. anti-disease controls that might disrupt the flow of microchips and other components they need. For most people, the new coronavirus causes only mild or moderate symp…

March 19, 2020