Bordetella. There is no such thing as “kennel cough”. Kids get coughs and infections from other kids, and we don’t call it “school cough”, or “day care cough”. Two miniature pincers came down with severe Bordetella infection requiring hospitalization for both of them, and they NEVER EVER LEAVE THEIR HOUSE. Both dogs defacate and pee on newspapers on the balcony of a three story condo. It is important to realize that bacteria and viruses come to every house with the water meter reader, the electric meter reader, the gas meter reader, UPS/Fedex/US Mail delivery persons, gardeners, water delivery people, pool man, visitors, and on the bottom of the owner’s own shoes. There is no such thing as a closed environment in this day and age.