As U.S. regulatory uncertainty swirls around the vaccine space and health care in general, Vaxcyte Inc. stands poised for a readout of phase II infant data by the end of this quarter with VAX-24, the 24-valent pneumococcal conjugate vaccine (PCV). The San Carlos, Calif.-based firm will offer top-line safety, tolerability, and immunogenicity data, to be followed by top-line data with the booster dose by the end of this year.