Many consultants mentioned the W.H.O. ought to embrace what some known as a “precautionary precept” and others known as “wants and values” — the concept that even with out definitive proof, the company ought to assume the worst of the virus, apply widespread sense and suggest the most effective safety attainable.
“There is no such thing as a incontrovertible proof that SARS-CoV-2 travels or is transmitted considerably by aerosols, however there’s completely no proof that it’s not,” mentioned Dr. Trish Greenhalgh, a major care physician on the College of Oxford in Britain.
“So for the time being we’ve got to decide within the face of uncertainty, and my goodness, it’s going to be a disastrous determination if we get it unsuitable,” she mentioned. “So why not simply masks up for a number of weeks, simply in case?”
In any case, the W.H.O. appears prepared to simply accept with out a lot proof the concept that the virus could also be transmitted from surfaces, she and different researchers famous, at the same time as different well being companies have stepped again emphasizing this route.
“I agree that fomite transmission will not be immediately demonstrated for this virus,” Dr. Allegranzi, the W.H.O.’s technical lead on an infection management, mentioned, referring to things which may be infectious. “However it’s well-known that different coronaviruses and respiratory viruses are transmitted, and demonstrated to be transmitted, by contact with fomite.”
The company additionally should think about the wants of all its member nations, together with these with restricted sources, and ensure its suggestions are tempered by “availability, feasibility, compliance, useful resource implications,” she mentioned.
Aerosols could play some restricted position in spreading the virus, mentioned Dr. Paul Hunter, a member of the an infection prevention committee and professor of medication on the College of East Anglia in Britain.