In a twist, the middle-aged were among those hardest hit, CDC says.
Proteins in nasal mucus might reveal if respiratory infection is caused by virus or bacteria.
As flu season picks up throughout the country, the elderly are most at risk of complications.
The virus is common among children this time of year. Keep it from spreading by washing hands and keeping infected kids home.
Study: Drug-resistant germs are thriving in America’s corroding water systems, possibly sickening thousands each year.
It's time to re-think that daily ritual for your little ones. Most children only need to soak in a tub a few times a week.
Several factors—including economics, climate and population—are all likely contributors, experts say.
Healthy body temperature boosts ability of immune system to fight the virus.
Lilly Vanden Bosch, 10, says good riddance to a nasty post-transplant virus.
Researchers in Brazil detect symptoms similar to multiple sclerosis.
Researcher envisions routine immunizations within a decade.
Can snapshot from the past be useful in the present?
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