The medical centre in Tsarevo is holding a blood donation drive on Wednesday, 4 November, the centre said. Donors can come to the centre's building, and the drive starts at 09:00.
Organisers have named it "Tsarevo Gives Life". Blood donated on Wednesday will go to patients who need urgent treatment and transfusions.
The centre wants more people in Tsarevo municipality to become volunteer blood donors. It has invited all residents of the municipality who want to help the sick.
Organisers have not said when the drive will end. Donors are safer coming early on Wednesday morning, soon after the centre starts taking donations.