Several different diseases, including polio, diphtheria, tetanus, and pertussis, can be prevented with Kinrix. This combination vaccine is given as a booster shot to children four to six years of age. Healthcare providers may also recommend off-label Kinrix uses; using the vaccine for "catch-up" purposes in older children and adults is considered an off-label use.
What Is Kinrix Used For?
Kinrix® (DTaP and IPV) is a routine childhood vaccine. It is a combination vaccine, used in place of the DTaP vaccine (diphtheria, tetanus, and pertussis vaccine) booster and the IPV (inactivated polio vaccine) booster, usually given to children four to six years of age.
Many healthcare providers and parents prefer to use combination vaccines whenever possible in order to reduce the number of injections a child must receive.
How Does It Work?
Kinrix contains several different components, namely tetanus and diphtheria toxoids, pertussis antigens, and an inactivated (killed) polio virus. None of the components of are "live," which means that Kinrix cannot cause diphtheria, tetanus, pertussis, or polio. This is especially important for polio, since a different vaccine (the oral one) can actually cause the disease in rare cases.
Simply stated, the components of this vaccine "trick" the body into thinking it has been exposed to these different infections. The body then produces antibodies that will help fight infection if future exposure occurs.
Using Kinrix in Older Children and Adults
Although this vaccine will ideally be used only in children four to six years of age, it could be given (either by accident or as a "catch-up" vaccine) to older children and adults. Kinrix is not approved for older children or adults because of the DTaP component, not the polio component.
DTaP (in any form) is approved only for children under seven years of age. For individuals 10 years or older, Tdap is recommended instead. Tdap contains a lower strength of the diphtheria component, compared to DTaP.
Notice that neither DTaP nor Tdap are approved for children seven to nine years old. However, sometimes children in this age range need to be vaccinated, usually to "catch up" on their vaccines.