immune

Swine flu is back with a vengeance. How can we stay virus-free this winter? Jeremy Laurance explains It has been an unusual year for flu. But the virus always catches us by surprise. Last year the first pandemic of the 21st century...

Whether worms that inhabit the gut can help control the immune overreaction in inflammatory bowel disease is being explored Poor sanitation, unclean water and contaminated food blight the lives of millions of people in the developing world. At the other end of the spectrum, too much...

When Sikh students get teased about their religion, the newest immigrants are the most common victims, students say. Less Americanized students, whether they have been in the United States for two years or two months, are often the target of taunts and teasing by Western students — including...