Who is likely to be affected by exposure to PM2.5, and why?
Older adults, individuals with heart or lung diseases, and children are more likely to be affected by PM2.5 exposure. People with heart and lung diseases are at increased risk because particles can aggravate these diseases. Older adults are at increased risk because they may have undiagnosed lung or heart disease. Children are likely at increased risk because they are still developing and spend more time outdoors and generally at high activity levels.
