Children's Health

California health officials say more than 4 dozen cases of measles have been diagnosed in the state — a result of an outbreak that started at Disneyland. Most who got sick were not vaccinated.

The vaccine is only about 23 percent effective against the dominant flu strain, according to the Centers for Disease Control and Prevention. That's because the strain mutated slightly.

Brain imaging can help researchers tell if people are more likely to be able to quit smoking or have trouble with reading. But those tests aren't yet ready for the doctor's office or classroom.

A new wave of self-monitoring devices and apps is hitting the Consumer Electronics Show — ones with explicit medical purposes. They promise to help diagnose everything from ear infections to diseases.

For some teenagers, parties with alcohol are almost a rite of passage. Surveys show the vast majority of parents in these homes know the alcohol is flowing. Cities are now cracking down on the adults.