I can't speak specifically to the number of manufacturers. I will say that 70% of the Public Health Agency's contracts for the N95 respirators are domestic; 50% of the surgical masks that are procured by the Public Health Agency are domestically manufactured; 100% of the face shields procured by PHAC are domestically manufactured; and 25% of the disposable gowns have been domestically manufactured.
On February 28th, 2022. See this statement in context.