After decades where rates of childhood obesity have soared, researchers now detect a clear decline in the percentage of boys who are overweight or obese in Sweden. A similar trend can be found elsewhere around the globe, including Norway.
Pregnant women run a higher risk of getting seriously ill if they catch influenza. A new study shows that new-born infants run no higher risk of harm if their mothers have taken anti-viral medications to ward off flu infections.
New research has identified how the brain fights viral infections. The results may have implications for the fight against everything from multiple sclerosis to Alzheimer's disease, schizophrenia, and depression.