2/ A combination of administrative (e.g. screening & testing), environmental (e.g. ventilation), and personal protective equipment (e.g. masks) can control the spread of airborne infections. cdc.gov/tb/publication…
3/ Some workplaces (e.g. schools) have very low levels of risk. Some workplaces (e.g. hospitals) have especially good ventilation to reduce risk. Other workplaces (e.g. meat-packing, prisons/jails) have minimal protections in place. nytimes.com/2021/02/17/hea…
4/ Does everyone need to be wearing an N95 all the time? No. But healthcare workers should not have to be reusing and decontaminating their N95s. nytimes.com/2021/02/17/hea…
5/ But we CDC needs to update guidance to allow OSHA to protect workers (e.g. people working in meatpacking, food processing, jails/prisons) against the risk of SARS-CoV-2 transmission in their workplaces. OSHA is issuing emergency temporary standards by March 15th.
6/ In the healthcare setting, I think we need to move away from "aerosol-generating procedures" as the threshold for wearing an N95 or equivalent. We know that intubation/extubation are lower risk than a volitional cough, for example. jwatch.org/na52621/2020/1… 
7/ My biggest gripe with the healthcare setting is that many healthcare workers are still having to reuse & decontaminate their N95s. But I'm much more worried about other frontline workers, who don't have the ventilation & other protections we enjoy in healthcare settings:
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