Quote the exact text that specifies this.
“The use of masks and respirators to prevent transmission of influenza: a systematic review of the scientific evidence”
The fact that you believe [blah blah blah]
"Masks" is unspecified in the text you quote (respirators are PPE). Your nattering about my supposed beliefs is irrelevant to what the text does or, in this case, does not specify.
“influenza” is in the title as well
And SARS studies are in the body.
(masks with or without hand hygiene; N95/P2 respirators).” [...] This is in the second paragraph of the abstract
The abstract refers to "medical masks" once in the midst of 7 references to "masks", no adjective - in which 7 cases they were therefore not restricting the discussion to medical masks. Further, Table 3 refers to "Double-layer cotton mask" - and to "using mask frequently in public places" and "wearing mask when outside home" by probable SARS cases contacted by random or sequential phone dialing, rather than health care workers.
You lose. Again.