What does it mean for airborne infection to be important indoors? Health care workers may need N95 masks all the time. Ventilation systems in schools, nursing homes, residences and businesses may need to minimize recirculating air, and add powerful new filters and UV lights.
I’ve been reporting this story for weeks, and talked to 20 people, obtained internal emails and heard descriptions of meetings. Most of my sources are long-term WHO consultants, and some are on its infection and protection committee (which reviews all the corona evidence). 3/x
Most of the sources talked to me on the record, some off the record because of their ongoing association with the @WHO. 4/x
Together, they paint a picture of the @WHO as an org with an overly medicalized idea of scientific evidence, too risk-averse to move quickly during a pandemic, and dominated by a few conservative proponents of hand-washing 5/x
The science of aerosols has evolved and yet the @WHO is using decades-old definitions, according to the critics. And it has not listened to aerosol experts enough, they say. 6/x
WHO staff have a tough job, balancing the science with the needs of all their member nations, especially the low- and middle-income nations. But do they need to revisit how they evaluate evidence? "We definitely want to do better" said @doctorsoumya 7/x
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