Dr. William Vitale

Dr. William Vitale has been suspended by the College of Physicians and Surgeons of Nova Scotia for mixing incompatible vaccines. (CBC)

Some of William Vitale’s patients should get another flu shot because the suspended doctor might have mixed the seasonal vaccine with other immunizations, warns the Nova Scotia Department of Health.

On Thursday, health officials said they are contacting the parents of 27 children who received a flu shot from Vitale in the fall of 2013 because they might not be effective.

"We know that the seasonal or H1N1 flu is active in Canada now," said Dr. Robin Taylor, medical officer of health for the Capital District Health Authority in a release.

"We also know that young children are especially vulnerable to the flu, so we're reaching out to parents to ensure their children are re-vaccinated quickly."

What do I do now?

Capital Health is offering a re-vaccination clinic for patients in the Halifax area who do not have a family physician.

The clinic opens, Jan. 8. To book an appointment at the clinic, call 902-481-5813.

They said patients should not go to emergency rooms and walk-in clinics, because they are not designed to perform routine immunizations.

Earlier, other families were warned about general problems with childhood shots. Vitale had his licence suspended by the College of Physicians and Surgeons of Nova Scotia after he mixed incompatible vaccines in one syringe and injected them in one shot.

He was first warned against the practice in 2006.

The province said more patients could be affected as they comb through Vitale’s records.

The province said since the initial news broke, the re-immunization clinic has received 137 calls from patients and they've booked 57 appointments.