Why Getting Grimy As A Child Can Make For A Healthier Life
The so-called hygiene hypothesis is right. Scientists say they've figured out how exposure to germs in infancy reduces the risk of allergies and other immune system problems.
Bacteria Help Body Beef Up Immunity, Study Says
For years, scientists have suspected that the hygiene hypothesis plays a role in how diseases affect people in the modern hand-sanitized world, but they never had any specific evidence. But a new study from researchers at Brigham and Women's Hospital in Boston changes that.
Whooping Cough Bacteria May Be Changing Their Ways In Australia
Whooping cough has reappeared in the U.S. and other developed countries in recent years, despite widespread use of vaccines. Researchers in Australia offer a partial explanation: they say the vaccine isn't tailored to fight some of the most common strains of the bacteria.