People in the city are being encouraged to not let the flu ruin the festive period.
Gloucestershire County Council is encouraging residents most at risk from flu to protect themselves and their families in the lead up to Christmas and the New Year.
Full protection from the flu vaccine takes up to two weeks to develop and the county council is advising people to act now to ensure flu doesn't ruin the festivities.
Councillor Dorcas Binns, cabinet member for public health and communities, said: "Flu can knock even the healthiest people off their feet for a couple of weeks, which means it could end up taking over for the entire festive period. The last thing anyone wants is to be so seriously ill that they require hospital treatment.
"Flu is a preventable illness so we are encouraging those who are entitled to a vaccination to book an appointment in the next couple of weeks to make sure they are protected. Full protection from the vaccine takes a couple of weeks to develop, so people really need to come forward now to make sure they can go into the New Year happy and healthy."