Vaccines

The chief disease agency in the U.S. is looking into why the spores shipped to laboratories in nine states and a military base in South Korea hadn't been properly neutralized. So far no one is sick.

When the U.S. introduced the measles vaccine, childhood deaths from all infections plummeted. Scientists think they might know why: Benefits of the measles vaccine go way beyond the measles.

Measles infected hundreds of children at a Philadelphia church whose members didn't believe in modern medicine. In a rare step, health officials moved to compel the families to vaccinate the kids.

The Lawrence Berkeley National Laboratory has pinpointed the tools with the greatest impact, from affordable tablets for schoolkids to an electrical grid in a box.

California lets kindergartners start school as long as they've had the first dose of all required vaccines. But some schools aren't tracking whether such kids end up getting all the doses they need.

The way a pediatrician talks with nervous parents about vaccines may determine whether the child gets immunized or not, a study suggests. Asking "What do you want to do about shots?" doesn't work.