Outbreaks in schools after June opening

There were 30 outbreaks of coronavirus in English schools after they reopened in June, according to Public Health England analysis.

The PHE report, published on Sunday, said the reopening of schools following the easing of national lockdown was associated with a total of 198 confirmed COVID-19 cases, 70 in children and 128 in staff.

There were 67 single confirmed cases, four “co-primary” cases and 30 outbreaks of COVID-19 in schools during June, it added. A total of 121 cases were linked to the outbreaks, 30 in children and 91 in staff, the analysis said.

Co-primary cases were defined as two or more confirmed cases with a common epidemiological link diagnosed at the same time, while outbreaks were defined as two or more epidemiologically linked cases where subsequent cases were diagnosed within 14 days.

Outbreaks were usually small in size and more than half (53%) involved just one secondary case, the analysis said. The report said there was a “strong correlation” between community coronavirus incidence and risk of outbreaks in educational settings, even during a period of low COVID-19 incidence. But it added this was not surprising because increased community transmission provided more opportunities for the virus to be introduced into educational settings.

The analysis said further school closures may be necessary in regions with increasing community infection, but this should only be considered “in extremis”.