Sadiq Khan on Tuesday urged eligible Londoners to get their Covid-19 booster and flu vaccines as he received both his jabs at a pharmacy in Tooting.
The Mayor called on Londoners to come forward for their jab as soon as possible amid rising fears that a "twindemic" of both viruses could put pressure on the NHS this winter.
Those who are eligible for the vaccine include frontline health and care workers, those aged 50 and over, as well as those who are pregnant or have underlying health conditions. Mr Khan was invited for the jab due to his severe asthma.
GP surgeries and pharmacies are offering doses of both vaccines and appointments can be made to receive both at the same time.
Mr Khan's call came as Covid cases continued to rise in London. Data published by the Office for National Statistics on Friday found that 1.8 per cent of Londoners had tested positive in the week up to September 24 - up from 1.5 per cent the week before.
The number of beds occupied by Covid-19 patients in the capital's hospitals has also risen to its highest figure in six weeks, according to NHS England.
A total of 1,228 beds were occupied by people with Covid-19 as of October 5 – a rise of 23 per cent in a week.
Many boroughs in London also continue to have the lowest rate of vaccination in the UK. In Newham, nearly half (42.9 per cent) of residents have not had a second vaccine dose, followed by Westminster (42.8 per cent) and Kensington and Chelsea (41.6 per cent).
Mr Khan said: “Thanks to the success of the lifesaving Covid-19 vaccine, our city is thankfully in a completely different place to where we were this time last year, but with winter coming it’s really important that we all remember that Covid-19 and the flu have not gone away.
“Both of these diseases can be life-threatening, and we must do all we can to protect ourselves and reduce the chances of a ‘twindemic’ adding further pressure on our hospitals and healthcare services."
