Coronavirus doctor's diary: Will vaccine sceptics make trials a headache?

It will soon be critical for the NHS to start vaccinating people against flu, to prevent hospitals being swamped with flu and Covid-19 patients this winter. Large-scale trials of Covid-19 vaccines, already under way in some places, are likely to start in Bradford in the autumn. It's therefore worrying, says Dr John Wright of the city's Royal Infirmary, that anti-vax conspiracy theories seem to have flourished in this pandemic.