Doctors don't always suggest that pregnant women get flu shots, which may account for the relatively low vaccination rates. Jamie Grill/Tetra images RF/Getty Images hide caption

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Ebola virus particles (blue) emerge from a chronically infected African green monkey cell. NIAID/Flickr hide caption

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'Pandemic' Asks: Is A Disease That Will Kill Tens Of Millions Coming?
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Kelli Fabick of Ellisville, Mo., held her mother's Australian silky terrier, Zoey, as veterinarian Sarah Hormuth gave the dog a flu shot last April. The dog flu strain H3N2 is now circulating in more than two dozen U.S. states. St. Louis Post-Dispatch/TNS via Getty Images hide caption

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Dog Flu Virus Spreading Across The United States
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The H1N1 swine flu virus kills some people, while others don't get very sick at all. A genetic variation offers one clue. Centre For Infections/Health Pro/Science Photo Library/Getty Images hide caption

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Bruno Mbango Enyaka gets his flu shot at a community health center in Portland, Maine, on Jan. 7. Gabe Souza/Press Herald via Getty Images hide caption

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This Year's Flu Vaccine Is Pretty Wimpy, But Can Still Help
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A rogues gallery of the viruses (left to right) that cause MERS, SARS, and influenza. Niaid; 3D4Medical; Niaid/Science Source hide caption

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Scientists Fight For Superbug Research As U.S. Pauses Funding
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Joseph Robert gets a flu shot at the Metropolitan Multi-Service Center in Houston during the Falls and Flu Prevention Day, sponsored by the National Council on Aging and Sanofi Pasteur, on Sept. 26, 2013. Aaron M. Sprecher/AP Images for National Council on Aging and Sanofi Pasteur hide caption

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