COVID AND THE VACCINE - TRUTH, LIES, AND MISCONCEPTIONS REVEALED, page-97853

Best used as a prophylactic -- in other words it works very well ijn place of a vaccine ..
If you know of covid or flu infection in your immediate environment , use IVM before you get symptoms, or if you start to get symptoms use it asap in the doses sierra suggests .

It can be accumulative so no need to use it until required-- either as soon as you learn of local infection or as soon as you get symptoms.

IVM is safe and effective -- it won a nobel prize for exactly that.