Vaccination: A Halachic Perspective
From Rav Yosef Fund, Senior Posek, Medical Halacha Center, a division of the Bais HaVaad The poskim discuss vaccinations from a halachic perspective. In earlier times, when vaccines were less safe, we find the poskim expressing some hesitancy in sanctioning vaccinations, but most later seforim write that this earlier hesitancy is no longer relevant. It should be noted that for the sake of simplicity, the following discussion will not distinguish between different vaccines. The efficacy and safety of different vaccines obviously vary, as does the severity of various diseases. Rav Yishmael HaKo...
Source: mishpacha.com