Only one of my kids have had a VPD, and it was influenza A (my older daughter had it at a year and a half old). They tried to give her tamiflu but I refused. She had a fever up to 106 for a couple days but by day 4, she was perfectly fine and running around. DH, who had the flu at the same time as her, was down for well over a week, but DD bounced back really quickly. It was a strain of influenza A that they had a vaccine for that year, but she didn't get the vaccine.
Oh wait...my DS had rotavirus as a 4 month old too. He cried a lot and had horrible horrible smelly diapers, but breastfed very very frequently for 10 days and never even had to see a doctor.
~Brandon Michael (11/23/03), Jocelyn Lily Nữ (2/4/07, adopted 5/28/07 from Vietnam), Amelia Rylie (1/14/09), & Ryland Josef William (9/7/05-9/7/05 @ 41 wks).