真相大白。FBI发现好多美国人是装病。
"FBI warns companies of employees faking coronavirus test results - CNNPolitics" https://amp.cnn.com/cnn/2020/04/14/politics/fbi-warning-fake-coronavirus-test-results/index.html
"FBI warns companies of employees faking coronavirus test results - CNNPolitics" https://amp.cnn.com/cnn/2020/04/14/politics/fbi-warning-fake-coronavirus-test-results/index.html