Nursing

Gerontology

Secondhand smoke

Demography

Asthma

Passive smoking

Public health

Environmental health

Pediatrics

Population

Internal medicine

Sociology

Medicine

Sudden infant death syndrome

National Health and Nutrition Examination Survey

MMWR Morbidity and Mortality Weekly Report

Although secondhand smoke exposure among U.S. nonsmokers declined from 87.5% to 25.2% during 1988â2014, one in four nonsmokers, including 14 million children, were exposed to secondhand smoke during 2013â2014.

Exposure to Secondhand Smoke Among Nonsmokers — United States, 1988–2014