The only vaccine I'm sure it might work could be a bacteriophage vaccine. Kursgesagt(or so I recall) made a video at this link:https://www.google.com/url?sa=t&source=web&rct=j&url=https://m.youtube.com/watch%3Fv%3DYI3tsmFsrOg&ved=2ahUKEwj5saiziLjqAhV65OAKHYWqChAQo7QBMAN6BAgIEAE&usg=AOvVaw2UvQTuzmuASKUVxbpk_nOf