Pensioners are being warned of a bogus caller who is offering to give flu jabs at home - for £20 a time.
Coventry Teaching Primary Care Trust issued the warning after an elderly resident, living in Stoke Aldermoor, was called and asked for personal information on Sunday afternoon.
The caller then offered to come to the pensioner's home to administer a flu vaccination - which are free to people over 65 - for a £20 fee.
GP practices within the trust usually write to patients eligible for the free jab during their annual flu campaign, inviting them to have a vaccination.
Other people entitled to a free flu jab are those who care for the elderly or disabled, and patients with serious heart or chest complaints, kidney disease, or lowered immunity.
Peter Hodder, the trust's director of primary care, said:
"Only in a small number of cases will a district nurse give a flu jab to someone in their own homes.
"We never ask people for money. If someone calls please ask for the caller's name and if in doubt check their identity by calling 02476 246 059."