That’s the problem, people start feeling off, but don’t think it could be covid and go about their normal business rather than taking precautions not to be around other people...I know people who started to not feel well, but did not initially think they had coronavirus...3 or 4 people I know of got it from people who went to work even though they were not feeling well...Certainly, if people are not feeling well, or even start with a sore throat, they should hold off on travelling...I really do wonder if people can spread the virus before they start feeling sick.
The problem is I have seasonal allergies so sore throats and sniffles are common for me this time of year.
I call those individuals PRE- symptomatic, not asymptomatic, and yes, I know of several people personally who this held true for.
One young lady I know was exposed at her job. Someone tested positive so they all got tested. Her first test was negative. A day or two later, she began her earliest symptoms. She felt like she was getting a head cold, and then had no taste or smell a day later.
When her fiancé started with a headache, she was retested and this time was positive. Two days later he tested positive also.
Both are over it now, and got to spend a late Christmas with their families.
In my mind, this is pre-symptomatic not asymptomatic spread. I would love to know if I am wrong in this assessment.