The mask mire

How governments and public health bodies failed to answer critical pandemic questions

Some of us started reviewing the evidence of the effects of physical interventions on the spread of viral respiratory infection two decades ago. The Cochrane review, now in its fourth update, concludes there is still uncertainty about the effects of face masks.   

“Physical interventions” include hand washing, distancing, disinfection and barriers, including all types of masks. 

SARS-CoV-2 had not been identified when we did the last update (published in November 2020), so we reviewed what physical interventions did to affect the spread of influenza and influenza-like illness. Most identify these two as “Flu”. We have already shown the lack of knowledge that accompanies this microbiological simplification. 

Influenza-like illness is a syndrome made up of a constellation of signs and symptoms: fever, cough, runny nose, malaise, fatigue and so on, with which everyone is familiar. It is a multiagent syndrome caused by scores of known viruses (including seasonal coronaviruses) and many more…