Temperature checks are practically useless, not just for Covid but for any other illnesses. First, there are many people who get Covid and other illnesses who never run a fever. I never had a fever when I had Covid. Second, there are reasons besides a contagious disease that you can run a fever. And, third, most fevers are very easy to control with simple over-the-counter medicine like Tylenol or Motrin. So you're not really accomplishing anything by doing temperature checks at the front gate. Even Dr. Fauci has said they are unreliable and that government facilities haven't used them for quite some time.