they reduce mortality and morbidity due to infectious diseases and they do so with exemplary safety.
That's an easy record to fake when the medical profession drags its feet when it comes to identifying serious complications as being vaccine related.
When my mom developed Guillain-Barre in reaction to her flu vaccine, the staff neurologist refused to indicate the flu vaccine as the cause. My dad happened to be friends with a top administrator at the hospital (a cardiologist associate), whom he contacted about it. Only then did the staff neurologist agree to indicate that it was a reaction to the flu vaccine. Most folks, however, don't have a close relative who's a doctor with connections at the hospital where they're being treated, so it's a very reasonable conclusion to draw that most bad reactions to flu vaccines go unreported, and thus don't appear on the safety statistics you cite.
Medical professionals are psychologically predisposed against drawing the conclusion that serious medical conditions might be associated with a treatment that they've personally recommended in the past to patients as safe.
