Author: MICHAEL NEDELMAN, CNN

Chickenpox vaccine caused meningitis

Doctors described what they believe are the first known cases of meningitis due to reactivation of chickenpox vaccine in two 14-year-old boys who received both recommended doses, according to a paper published Wednesday in the journal Pediatrics.

Trial: For heart disease, meds may work as well as invasive surgery

High-risk patients with stable heart disease may fare just as well on medications alone, versus having invasive heart operations such as stents and bypass surgeries, according to a major trial. The results were presented Saturday at the American Heart Association's yearly conference.

Cigarette smoking falls to record low in US

Cigarette smoking among US adults fell to its lowest recorded level in 2018: 13.7%, according to a report published Thursday by the US Centers for Disease Control and Prevention.