Merck Recalls 1 Million Doses Of Childhood Vaccine

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Merck is recalling about a million doses of a childhood vaccine.

The move was made after testing showed a sterilization problem
at its Pennsylvania plant.

Merck is not aware of any harm to children who received the
vaccine -- known as Hib -- which prevents meningitis and pneumonia.

The vaccine is a three-dose shot recommended for all children
under 5 and is usually given to infants starting at two months old.