Pfizer Inc has taken steps to expand its portfolio of treatments for infectious disease with the acquisition of ReViral Ltd, a UK company with candidate products for respiratory syncytial virus (RSV) infection. The acquisition has been valued at up to $525 million. RSV is a respiratory pathogen which can lead to severe lower respiratory tract infections in young infants and older adults. There is currently no specific treatment for RSV infection, although the antibody therapeutic Synagis (palivizumab), approved for marketing in 1998, helps prevent serious lung infections caused by RSV.
