The Bordetella vaccine is a non-core vaccine that is usually given to dogs that are frequently exposed to other dogs in boarding or social settings. Bordetella bronchiseptica is the most common bacterial agent responsible for kennel cough in dogs, which is a highly contagious respiratory infection. The vaccine helps control and prevent the spread of germs that cause canine cough. The intranasal version of the vaccine is typically administered annually, although boarding facilities or hospitals may recommend it every six months. Puppies should receive the injectable version of the Bordetella vaccine between the ages of six to eight weeks. They should then receive a second injectable booster four weeks later, or between the ages of 10 to 12 weeks. Adult dogs should receive a booster form of the Bordetella vaccine every six to twelve months, depending on the risk factors for the dog. If a dog is often in social settings, such as dog parks, outdoor shopping centers that allow dogs, or restaurants that allow dogs, it is strongly recommended that they receive a Bordetella booster every six months to help ward off kennel cough.