Zoonotic Transmission of Vaccine-Derived Bordetella bronchiseptica
Yeah... live attenuated vaccines are always problematic for people with impaired immune systems. The vaccine is given up the nose... and dogs, of course, love to share their snot with their owners.
Apparently, the European Medicines Agency advises against using attenuated live vaccines in pets of immunocompromised patients. That dog owner should have mentioned something to the veterinarian.
As far as I know, my dog only gets killed vaccines.