Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
An example of color blindness test. A person with red-green color blindness would not be able to dis
