![]() ![]() On the other hand, every year about 1,700 people die in the United States soon after being infected with hepatitis B virus. Although no one has ever died because of the hepatitis B vaccine, the symptoms of anaphylaxis caused by the vaccine can be quite frightening. The symptoms of anaphylaxis are hives, difficulty breathing and a drop in blood pressure. About 1 of every 1 million doses of hepatitis B vaccine is complicated by a severe allergic reaction, called anaphylaxis. The hepatitis B vaccine has few side effects. Offit explain the risks and benefits of vaccines by watching this short video, part of the Talking About Vaccines with Dr. To better understand the definition of the word safe when applied to vaccines, let's examine a few different vaccines and the diseases they prevent. Or, said another way, a vaccine's benefits must clearly and definitively outweigh its risks. The second definition of the word safe is "having been preserved from a real danger." Using this definition, the danger (the disease) must be significantly greater than the means of protecting against the danger (the vaccine). ![]() We just figure that the benefits of the activity outweigh the risks. However, few of us consider taking a bath, eating solid food or walking outside on a rainy day as unsafe activities. For example, every year in the United States, about 350 people are killed in bath- or shower-related accidents, about 5000 people are killed when food lodges in their windpipe, and about 50 people are struck and killed by lightning. Although none of these severe symptoms resulted in permanent damage, they could be quite frightening to parents.īut, in truth, few things meet the definition of "harmless." Even everyday activities contain hidden dangers. For example, the original pertussis (whooping cough) vaccine could cause persistent, inconsolable crying, high fever or seizures associated with fever. And some vaccines cause more severe side effects. Almost all vaccines can cause pain, redness or tenderness at the site of injection. Using this definition, no vaccine is 100 percent safe. The first definition of the word safe is "harmless." This definition would imply that any negative consequence of a vaccine would make the vaccine unsafe.
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