Based on the information provided your daughter is having baby in april and she says that you need a vaccine
against whooping cough
and you wanted to know is it trued and wether medicare will provide for the vaccine cost.
To answer your question, yes its true you need vaccine against the whooping as baby have very low immunity and its easy for them to get infected for the adults.
More over medicare will cover your vaccine cost. So please get the vaccine and for further queries may need to contact you primary care
Hope it helps.
Dr. JAY PATEL.