The county center is administering 2,500 vaccinations a day, and that number is. Westchester county executive george latimer said that they will be expanding their vaccination efforts to include a new location at the community college on grasslands road which is near the mount. Westchester County Center Covid Vaccine Site Moves To Hospital The westchester county center is one of the first three sites in new york state to offer the covid vaccine to large groups of people. Westchester county center vaccine registration . New york state is moving its mass vaccination site from the westchester county center to westchester medical center in valhalla as of friday, nov. People are now moving from registration to vaccination, regardless of time of day, swiftly and always with a kind “be well!” from the staff helping them navigate the maze of this space. As part of this effort, the new york state legislature passed the immunization registry law which, as of january 1, 2008, requires health ...