UK: Vaccine breakthrough rate for Delta infections is 27% in Technical Briefing 23

The latest UK PHE Technical Briefing 23 has just been published covering the period up to 12th September 2021.  More...

UK: The Alpha variant rears its ugly head again

A big surprise in the latest UK sequencing figures show that the Alpha variant has made something of a comeback this week.  More...

Symptomatic Delta Covid infection rate far higher in fully vaccinated healthcare workers

“..our data suggest that vaccine effectiveness against any symptomatic disease is considerably lower against the delta variant and may wane over time since vaccination.”  More...