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.
The other reason that patient got tetanus was that he hadnât had a tetanus shot since he was a young child. In the United States, babies are immunized against tetanus through a series of four vaccinations. Children then receive two tetanus booster shots between the ages of 4 and 12. After age 12, a tetanus booster shot usually is recommended every 10 years. Why are booster shots necessary? Because the immunity provided by a tetanus booster shot begins to wane after five to 10 years.