UP to 10 prescriptions for the swine flu vaccine are being given out every week in Kirklees.
But the number of reported cases was lower than last year.
Dr Judith Hopper, NHS Kirklees director for public health, said there has been between four and six confirmed cases per week.
At the height of the swine flu pandemic in 2009, fewer than one in 10 given the vaccine actually had the virus.
She said almost a quarter of NHS Kirklees staff had been immunised against influenza, but expected the figure to rise to 40% by mid-February now the H1N1 vaccine was readily available.
