Vaccinated Hawaiian diagnosed with Covid delta variant

Hawaii says a vaccinated Oahu resident who travelled to Nevada last month has tested positive for the delta variant of Covid-19.

The delta variant was first detected in India and is a more transmissible version of the disease. The variant currently makes up 6 per cent of all cases in the US.

Hawaii Health Director Dr Libby Char says this is a “very rare breakthrough” case in which a Covid-19 vaccine didn’t prevent infection.

New analysis from researchers in the UK shows the Pfizer vaccine is 96 per cent effective against hospitalisation from the delta variant.