“Covid victims are most contagious for a few days before and after the onset of symptoms. By the time Covid symptoms first appear and the testing is done to confirm the disease most of the spreading has already occurred.”
Of course, you just made all of that up without citing a single actual instance of medical research or medical paper ...
OTOH,
For example, this from medscape.com ( https://www.medscape.com/answers/2500114-197467/what-is-the-duration-of-viral-shedding-in-persons-with-coronavirus-disease-2019-covid-19 ):
“The duration of viral shedding varies significantly and may depend on severity. Among 137 survivors of COVID-19, viral shedding based on testing of oropharyngeal samples ranged from 8-37 days, with a median of 20 days. [38] A different study found that repeated viral RNA tests using nasopharyngeal swabs were negative in 90% of cases among 21 patients with mild illness, whereas results were positive for longer durations in patients with severe COVID-19. [39] In an evaluation of patients recovering from severe COVID-19, Zhou and colleagues found a median shedding duration of 31 days (range, 18-48 days)”
Thus, if one can be cured with therapeutics like ivermectin and/OR HCQ taken at the first sign of covid, then severe covid can be prevented and viral shedding can be reduced to under a week instead of as much as 48 days. THEREBY, reducing the infective period by a factor of seven ...
It's been so well established for so long that I didn't didn't need to provide a link for informed FReepers.
For you:
COVID-19 patients most infectious 2 days before, 5 days after symptoms emerge, analysis finds.
If you need many more references saying the same thing please ask.