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Which lots of vaccine are being recalled?
Merck & Co. has initiated a voluntary recall in the United States for 10 lots of PedvaxHIB® [Haemophilus b Conjugate Vaccine (Meningococcal Protein Conjugate)] and two lots of COMVAX® [Haemophilus b Conjugate (Meningococcal Protein Conjugate) and Hepatitis B (Recombinant) Vaccine]. The affected doses were distributed in the United States starting in April 2007. The lots that are being recalled are: