August 22, 2013 -- Sanofi's vaccine manufacturing plants have had a rocky 18 months, with warning letters, recalls and shortages marring 2012. Next month was supposed to be a milestone in efforts to resume full supply of all vaccines, but now a testing anomaly has caused further delays.
The problem this time relates to a filling line at the plant that manufactures two combination vaccines, Daptacel and Pentacel. Sanofi began limiting orders of the vaccines--which protect against diphtheria, tetanus, pertussis (DTaP), polio and Haemophilus influenzae type B--in April 2012. Three months ago, Sanofi pencilled in the start of September for a return to full production, but it is now set to miss this target.