Switzerland has ordered millions more doses of Covid-19 vaccine as it braces for a resurgent wave of coronavirus that could require more restrictions on public life.

The order of 14m doses of the Pfizer-BioNTech shot means Switzerland will be able to offer booster shots to the public “if necessary”, the government said, as it warned that a rising number of serious cases could soon overwhelm hospitals.

It is considering ordering staff and visitors to show a certificate against Covid-19 infection in most public indoor spaces, according to a Reuters report.