Poorly ventilated schools are a super-spreader event

Infections of the Delta strain are increasing across Australia. A significant number of recent outbreaks have been in schools.

In the earlier waves of the COVID outbreak, in 2020, evidence showed children were getting COVID at much lower rates than adults, and the advice from experts was to keep schools open. But a series of papers later showed children were at similar risk of infection to adults.

This is even worse with Delta. According to the US Centers for Disease Control, the Delta variant is about twice as infectious as the earlier strains. And preliminary data suggest children and adolescents are at greater risk of becoming infected with this variant, and transmitting it.

The World Health Organization  has recognised SARS-CoV-2, the virus that causes COVID-19, is airborne. The evidence for aerosol transmission is now enough for the Australian Infection Control Expert Group (ICEG), which advises the federal government, to have recently amended its earlier advice that COVID-19 was only spread by contact and droplets:

“Poorly ventilated indoor crowded environments” accurately describes conditions at many schools. Even in lockdown, schools are still open for children of essential workers and classrooms in use can have relatively high occupancy.

In or out of lockdown, poorly ventilated schools are a super-spreader event waiting to happen.

Continue reading on The Conversation website: Poorly ventilated schools are a super-spreader event waiting to happen. It may be as simple as opening windows