Poliovirus Infections in Minnesota vaccine-derived

The Plains Feeder has a subscription to the CDC's Morbidity and Mortality Weekly Report (MMWR). Now and then they issue a dispatch, a sort of disease of the Week Club hors d'oeuvre. We just got this interesting one: Poliovirus Infections in Four Unvaccinated Children --- Minnesota, August--October 2005. The following summary came from the e-mail cover letter:

The Minnesota Department of Health (MDH) has identified a vaccine-derived poliovirus (VDPV) in an unvaccinated, immunocompromised infant girl aged 7 months and in three siblings in a separate household. All four children live in an Amish community largely unvaccinated for polio. The infant girl has no paralysis, and the source of her infection is unknown. VDPVs are derived from the Sabin poliovirus strains in oral polio vaccine, which was discontinued in the United States in 2000.

Were you innoculated with Sabin type polio vaccines? Does this make you nervous? I got the old Salk stuff.

Aetiology, the Iowa City disease blog, has analysis posted at Polio in Minnesota.