The DTaP and Tdap vaccines both protect against three bacterial infections: diphtheria, tetanus and pertussis, whereas the Td vaccine only protects against diphtheria and tetanus. In addition, the vaccines vary in terms of who should receive them and the quantities of vaccine proteins they contain: 1  DTaP: The DTaP vaccine is given to infants and young children in a series of five shots â at 2 months, 4 months, 6 months, 15 to 18 months, and again at 4 to 6 years of age. Tdap: The Tdap vaccine is different from the DTaP vaccine because it contains lesser quantities of diphtheria and pertussis proteins.
1 To prevent a heart attack, take two low-dose (81 mg) aspirin every day if youâre at risk or over 40.  If you think youâre having a heart attack, take 325 mg of aspirin, and make sure to chew the aspirin before swallowing, because it gets into the bloodstream quicker.
Baby Aspirin May Be Best for Heart. May 8, 2007 -- Baby aspirin may be the best aspirin dose for heart health, according to a new research review. A single pill of baby aspirin contains 81 milligrams of aspirin. That's about a quarter of the 325-milligram dose in an adult aspirin pill. The new research review states that in the U.S., the most commonly prescribed aspirin dose for heart health is 81 milligrams per day. The review shows that aspirin doses greater than 81 milligrams per day haven't been proven better than baby aspirin for the heart and may increase the chances of stomach bleeding.