The Current Hot Topic

Please excuse when I ask this question. I have been out of the work force for 9 years now but I still have my logic and common sense in very good working order. Tonight (5-20-20) I heard on the ABC News that the Ford Corp. closed down 2 of their large factories right after they reopenned them due to the fact that 3 employees tested positive for COVID-19. Now, state with me here. The country has been on lockdown for over 3 weeks, millions of people have lost their jobs, testing for positive results have been going on for approximately 10days to two weeks. Just the past week the country has been slowly reopening. Now if major corporations have been locked down for the entire time until now, and are supposedly taking extra steps for the safety of their 't employees as well as the public, why then didn't they before reopening have their employees go through a complete physical including a full blood test weeks before the plant was scheduled to open. That would give management time to get a report if there were anyone who did show positive results. This could be done without revealing ids outright just use employee id numbers. Once the employees are identifieed if there are any, Management can offer early detection treatment and have them state in quarantine for two weeks just as others have been doing. The employees would be put on disability until they are cleared. Closing the entire plant because of 3 employees is hurting thousands upon thousands immediately when there is no reason for it. Am I missing something or do people agree with me? Thank you