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.
An infectious disease is an illness that can be transmitted from person to person. There are several different causes of infectious diseases, including parasites, fungi, bacteria and viruses. Infections can develop in all areas of the body including the heart, brain, lungs and bones.