A new vaccine against rotavirus, the diarrheal infection that kills millions of children worldwide, doesn’t appear to raise the risk of serious bowel blockages that caused a previous vaccine to be pulled from the market five years ago, doctors reported Sunday. The new vaccine, Rotarix, was recently licensed in Mexico and is expected to go on sale there this year. Its maker, Belgium-based GlaxoSmithKline Biologicals, plans to seek similar approvals throughout Latin America, Asia and Europe, and to launch a study in the United States aimed at getting it approved for American infants.
