We still do not have a reliable test to diagnose Covid 19 infections. PCR tests are often positive when there’s no infections at all. Antibody tests cannot reliably differentiate between a previous infection and a new infection. Positive antibody tests are seen in 4-40% of patients with influenza, respiratory syncytial virus, HIV, strep infections and a wide range of other illnesses that confound the diagnosis of Covid 19. To date we still not isolated the virus & that makes is almost impossible to make a safe and effective vaccine. Vaccine makers are not required to produce a safe or effective vaccine!