Zeroth, that's terrible to hear about your daughter. I sincerely hope that she's better. First, there is no answer to a zoonotic infection as mutable as influenza. There are only degrees of remediation. Finding a cure for flu is almost certainly impossible.

Second, nobody disputes the seriousness of nosocomial infection; but to baldly state that you face the same risk in an outpatient vaccination clinic as in e.g. the ICU or the ER is just flat out bonkers.

Finally, I was intemperate in my original language. I apologize.