Texts and letters will be sent to eligible people who had their second vaccine at least six months ago
Invitations to book a Covid booster jab will be sent to 1.5million people in England this week.
Those who are eligible for a booster include:
those living in residential care homes for older adults
all adults aged 50 years or over
frontline health and social care workers
all those aged 16 to 49 years with underlying health conditions that put them at higher risk of severe Covid-19, and adult carers
adult household contacts of immunosuppressed individuals
Texts will start going out from tomorrow, with letters also being sent later this week.
The health and social care secretary, Sajid Javid, said:
Booster doses are an important way of keeping the virus under control for the long term and will protect the most vulnerable through the winter months.
I urge everyone who receives a letter or text to get their jab as soon as possible so we can strengthen the wall of defence across the country that each vaccine brings.
People will either receive one dose of the Pfizer vaccine or half a dose of the Moderna vaccine. NHS England said millions more invites will be issued in the coming days and weeks.
Dr Nikki Kanani, GP and deputy lead for the Covid vaccination programme, said:
As we head into winter we should not drop our guard so I would urge everyone to come forward and get a booster vaccination when then they are invited.
Getting a top-up vaccine is the best way to protect yourself and your loved ones from this cruel virus.