MedImmune Inc.
More H1N1 Vaccine Recalled

Vaccine maker MedImmune has voluntarily recalled 13 lots of vaccine against the pandemic H1N1 influenza because they have lost some potency since they were manufactured, the company said Tuesday. "This is not a safety issue," Norman Baylor, director of the Office of Vaccines Research and Review at the Food and Drug Administration, said in a conference call. "All lots passed pre-release testing for safety, purity and potency. There has just been a slight decrease in potency." The 13 lots recalled involved 4.7 million doses of the intranasal vaccine, which is based on a live, weakened virus, but officials believe most of them were administered in October and November when...