Word: papillomavirusã
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...vaccine, which was approved by the Food and Drug Administration a year earlier, protects against four types of the human papillomavirus??€”or HPV—two of which cause 70 percent of cervical cancer cases, according to drugmaker Merck’s Web site. There are over 40 strains of HPV that can infect the human genital area, according to the Center for Disease Control's Web site, although most people who become infected do not show symptoms...
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