Delta variant about as transmissible as chickenpox – Unpublished CDC document says.

The findings of a public health investigation on a small US town’s COVID-19 cluster could have serious implications in the UK and around the world.

A week after the 4th July celebrations in Provincetown, Massachusetts, Town Manager Alex Morse told reporters that he realised that several positive cases of COVID-19 had occurred among beachgoers who had spent some time there.

A cluster associated with the coastal town has already recorded at least 882 COVID-19 cases, with 50 new cases reported over th…