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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.