Cambridge hospital’s mask upgrade appears to eliminate Covid risk to staff

Hospital infection study shows use of FFP3 respirators at Addenbrooke's may have cut ward-based infection to zero'

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An NHS hospital that upgraded the type of face masks used by staff on Covid-19 wards recorded a dramatic fall of up to 100% in hospital-acquired coronavirus infections among those workers, research shows.

Addenbrooke's hospital in Cambridge upgraded the masks from fluid-resistant surgical masks (FRSMs) to filtering face piece 3 (FFP3) respirators, with the change made in late December in response to its own staff testing data.