H1N1 vaccine administered by Northfield Hospital & Clinics this fall is not part of the 800,000 pediatric doses being voluntarily recalled by its manufacturer due to a loss of potency after packaging.
Public health officials say safety is not an issue in this case. There is concern that stored vaccine from the identified doses — four batches of pre-filled syringes intended for children 6 to 35 months — may not provide the desired protection.
The manufacturer, Sanofi Pasteur, discovered a marginal loss of potency as part of its ongoing testing and reported the results to the government last week. Officials say the vaccine provides good protection to children who have already received it. The issue was whether the vaccine inventory from the identified batches would continue to lose potency.
Children who received the recalled vaccine do not need to be revaccinated, but parents are reminded that all children under 10 years should get the recommended two doses of vaccine with a month interval.
“The vaccine we received and administered is not the subject of the recall,” said Mary Quinn Crow, vice president and chief operating officer for Northfield Hospital & Clinics. “We will continue to monitor these developments closely, and we encourage people to get the seasonal flu and H1N1 vaccinations when they are available.”
For more information, go to http://www.cdc.gov/h1n1flu/vaccination/syringes_qa.htm.