Air Quality Alerts are available for most geographic areas in New England. Note that those areas in New England not covered by Air Quality Alerts do not generally experience unhealthy air quality.
Definition of disease. 1  1 obsolete : trouble. 2  2 : a condition of the living animal or plant body or of one of its parts that impairs normal functioning and is typically manifested by distinguishing signs and symptoms : sickness, malady infectious diseases a rare genetic disease heart disease.
Infection is the invasion of an organism's body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to these organisms and the toxins they produce.[1][2] Infectious disease, also known as transmissible disease or communicable disease, is illness resulting from an infection.