Yahoo奇摩 網頁搜尋

Diphtheria is a respiratory disease that can cause breathing problems, paralysis, heart failure, and death. It's highly contagious and is spread by coughing and sneezing.

Tetanus, or lockjaw, is caused by a bacterium often found in soil. Once it enters the body it releases a toxin that attacks the nervous system, causing muscle spasms and death if left untreated.

Pertussis, also highly contagious, causes coughing spasms so severe that in infants it makes it difficult to eat, drink, or even breathe. It can lead to pneumonia, seizures, brain damage, and death.

Before the vaccines were developed, these diseases were rampant. Vaccines protect the community by preventing the spread of disease from one person to the next, which even offers some protection to the unvaccinated. If people stopped getting vaccinated, the incidence of these three diseases would rapidly rise and thousands would get sick and perhap...

Both vaccines contain inactivated forms of the toxin produced by the bacteria that cause the three diseases. Inactivated means the substance no longer produces disease, but does trigger the body to create antibodies that give it immunity against the toxins. DTaP is approved for children under age 7. Tdap, which has a reduced dose of the diphtheria ...