Doom:
Rav Shmuel shlit”a was not anti-vaccines. He was not an advocate for them but was not against them. He also consulted with Rav Chaim Kanievsky shlit”a who concurred with him. And they addressed the issue of a school stopping unvaccinated kids from entering the school. This was not during an outbreak. Neither of these can be used the phantom “gedolim” that are against vaccinating.