Michael McNamara (Clare, Independent) | Oireachtas source

I have in front of me a document, "Advice on the use of masks in the context of COVID-19: interim guidance", published by the World Health Organization on 5 June 2020, which is only six days ago. It is divided in two - there is advice for healthcare workers, both those dealing with Covid-19 patients and those not dealing with them; and, there is advice for decision-makers on the use of masks for the general public. It states:

Many countries have recommended the use of fabric masks/face coverings for the general public. At the present time, the widespread use of masks by healthy people in the community setting is not yet supported by high quality or direct scientific evidence and there are potential benefits and harms to consider.

Those benefits and harms are set out thereafter. Has there been a change in that WHO advice? Does Dr. Nabarro disagree with it? How does he reconcile it with his personal view on face coverings?