If I am not correct about this someone please correct me. I watched the Trump hour today and Trump said something about the pence secretary being negative one day And positive the next so she somehow contacted the virus later the same day that she was tested negative and it happened afterwards.
but soon after the doctor said that during the incubation period someone might test negative until they test positive. This sounds like an extremely important thing that everyone should know about and be informed about when trying to understand the transmissibility of the virus and the need for regular testing and follow up if there is any exposure.