Hello. Greetings? I have a confusion:- How RT-PCR or other rapid tests meant for Covid 19 also come positive in case of infection from its variants say Delta or Omnicron? Can it mean these tests simply detect Corona family virus but not specifically to Covid 19 virus for which genome screening will also be needed to ensure soecific virus screening? Not sure, during epidemic or pademic, it is taken as granted that it should be the same soecific virus but still not for sure. Many symptoms can be similar in same virus family infection so can confuse. One common cold virus is also classified under this family. Best wishes.