The NHS in England is launching a spring booster vaccine campaign against Covid-19 for people most at risk of serious illness from the disease.
Around five million are eligible, including people aged 75 and over, some people with weakened immune systems, and older residents in care homes.
From this week, older adults in care homes are expected to begin receiving their vaccines, given by visiting NHS teams.
Other eligible people will be able to receive jabs from mid-April.
Bookings for those appointments will open on Wednesday 5 April.
Millions of invitations will be sent through the NHS App, alongside texts messages and letters for those without the app or not actively using it.
To find out more, visit the BBC website