By Carol McCarthy The word quarantine might conjure images of plague, with warnings to “keep away” hastily slapped on the homes of the infected. But there are times when your pet needs to be quarantined — that is, kept confined and secluded — for his health and the health of the animals and people around him. Quarantine orders are not common, but when they are given, they should be taken seriously. Learn more about when, and how to quarantine your pet, below. What diseases or conditions require a pet to be quarantined? Suspected exposure to rabies, a fatal virus, is the most common reason that your pet will be ordered under quarantine, says Dr. Mary Labato, an internist at Tufts University’s Foster Hospital for Small Animals in Massachusetts. Quarantine is a legal requirement, ordered by an animal control officer under the direction of your state, she says. Other illnesses that can warrant quarantine recommendations from your veterinarian, rather than orders from your local government, include canine or avian influenza, bordetella — commonly known as kennel cough — parvovirus and giardia, Labato, said. These infectious diseases are easily transmitted from animal to animal, which is why it is important to sequester your sick pet. Signs of influenza are similar to those in people: coughing, sneezing, fever, nasal discharge and lethargy. Dogs with bordetella will have a persistent hacking cough; while pets with giardia and parvovirus will have diarrhea and vomiting (although not all pets with giardia show clinical signs and can appear completely healthy while being infected).