Already facing one rival to its blockbuster pneumococcal vaccine Prevnar, Pfizer could have another to contend with, after Affinivax reported positive phase 2 results with its ASP3772 candidate ...

GSK said it is paying $2.1 billion upfront for Cambridge, Massachusetts-based Affinivax, with another $1.2 billion in potential development milestones, to get its hands on the ASP3772 shot ...