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year from hepatitis, according to Dr. Bums, many of them 20 years later from cancer or cirrhosis of the liver.
Fact: Since the Hib vaccine was introduced five years ago, Dr. Bums said that over 90 percent of the invasive diseases caused by the bacterium have been eliminated.
Fact: Virtually every reported case of tetanus involved a victim who was never immunized.
Vaccines that eliminate the “wild” viruses and bacterium prevent harmful, often devastating outbreaks and have led to the elimination of at least one killer disease.
“The greatest public health achievement is having clean water, managing sewage safely. But the most dramatic achievement was the elimination of smallpox,” said Dr. Bums.
The eradication of smallpox began when the smallpox vaccine was introduced in the late 1800s. By 1970 the disease had been totally eliminated, said Dr. Bums.
“The smallpox virus only exists in two labs,” he said. “One lab is in the Center for Disease Control and the other is in Russia.”
The second disease that the U.S. stands a chance of eliminating is polio. “There have been no indigenous cases of polio in the U.S. 'since 1976, and no cases in the entire western hemisphere since 1991,” said Dr. Bums.
Dropping occurrence rates may affect how the vaccine is administered. “As we eliminate the wild virus we aren’t saving as many lives with the vaccines and some are harmed by the vaccine itself,” Dr. Bums said.
The polio vaccine, or OPV, is given orally. The oral vaccine caused eight to 10 cases of paralytic disease last year in the U.S. But the injectable polio is a “killed” vaccine that does not cause the disease.
This year, for the first time, a chicken
92.8%