There is no new Parvo. There is no new Parvo. There is no new Parvo. Whatever the reason, mass e-mails continue to circulate warning dog owners about the horrors of the "new" strain of Parvo (that has actually been around for years). Read the August 27, 2008 press release on the subject which clearly states the "new" Parvo is not new and it does not "jump the vaccines" and there has been no increase (in MI, where Vets from West Michigan Academy of Small Animal Practitioners gathered to talk about it) in Parvo infections among vaccinated dogs.
Also see Pet Connection's latest post on this recurring subject.