Benjamin Franklin and George Washington The First U.S. Postage Stamps Issued 1847 The first stamp issues were authorized by an act of Congress and approved on March 3, 1847. The earliest known use of the Franklin 5Â¢ is July 7, 1847, while the earliest known use of the Washington 10Â¢ is July 2, 1847.
The DTaP vaccine prevents the spread of diphtheria, tetanus and pertussis from an infected or exposed person to another person. The Federal Drug Administration introduced the DTaP vaccine in 1997 to replace the DTP vaccine formula, which was linked to safety concerns in young children. Similar to other childhood immunizations, DTaP side effects are minimal when compared to the risks of contracting one of the three diseases it protects against.
DTaP is approved for children under age 7. Tdap, which has a reduced dose of the diphtheria and pertussis vaccines, is approved for adolescents starting at age 11 and adults ages 19 to 64. It is often called a booster dose because it boosts the immunity that wanes from vaccines given at ages 4 to 6.he current recommendation is that one dose of the Tdap vaccine be substituted for one dose of the Td vaccine between the ages of 11 and 64. Pregnant women are also advised to get the Tdap vaccine, preferably between 27 and 36 weeks' gestation.