Question: is this a 2) strong advice, 1) weak advice 0) no advice?

The widespread dispersal of spores in a building has been demonstrated both by Q fever (disseminated through a large medical school building) (23) and by anthrax (dispersed through a post office with an area of 281,387 ft2 and a volume of approximately 7 million ft3) (40). 
user
This is no advice
assistant