The team installed a high efficiency particulate air filter/UV steriliser – a device made up of thousands of fibres knitted together to form a material that filters out particles.

These machines were placed in fixed positions in the ward and operated continuously for seven days, collectively filtering the full volume of air in each room between five and 10 times per hour…

They placed air samplers at various points in the room and then tested the samples that were collected using PCR assays similar to those used in the “gold standard” COVID-19 tests.

The team found that the devices not only reduced all traces of the SARS-CoV-2 virus when it was running, but also significant reduced levels of bacterial, fungal, and other bioaerosols.