A chromosome (from Greek: ÏÏá¿¶Î¼Î± color and Ïá¿¶Î¼Î± body) is a packaged and organized structure containing most of the DNA of a living organism.
Diphtheria, tetanus and pertussis are prevented by a childhood vaccine, called DTaP, and a newer vaccine for adolescents and adults, called Tdap.
This is the first booster shot for tetanus and one dose is given to all preteens at age 11 or 12. All teens and adults who never got the Tdap shot need one dose in place of a Td (tetanus and diphtheria) shot. Tdap helps protect against whooping cough (pertussis).