A health worker in protective suit works at a drive-thru coronavirus test site in Elysian Park in Los Angeles, the United States, March 27, 2020. (Xinhua)

Photo taken on March 27, 2020 shows a drive-thru coronavirus test site in Elysian Park in Los Angeles, the United States. (Xinhua)

Photo taken on March 27, 2020 shows a drive-thru coronavirus test site in Elysian Park in Los Angeles, the United States. (Xinhua)