Found some:
Canine parvovirus - Wikipedia, the free encyclopedia
"Certain breeds, such as Rottweilers, Doberman Pinschers, and Pit bull terriers as well as other black and tan colored dogs may be more susceptible to CPV2"
Parvo FAQs
"For some reason, Rottweilers, Doberman Pinschers, and other black and tan breeds are especially prone to Parvo, and seem to succumb to parvo faster and with less chance of recovery than any other breed."