The atypical mycobacteria. The commonest PPEM to cause human disease is the Mycobacterium avium-intracellulare complex. PPEM differ from M. tuberculosis in their source (environmental or zoonotic), rate of growth, temperature of growth and ability to produce pigment on culture. Mostly infect immunologically compromised humans and the disease caused by some species may be clinicallyindistinguishable from true human tuberculosis.
A local-authority health o?cial specially quali?ed in aspects of environmental health such as clean air, food hygiene, housing, pollution, sanitation and water supplies. He or she is responsible for running the authority’s environmental health department and, when epidemiological advice is needed, the relevant public-health physician acts in a consultative capacity (see EPIDEMIOLOGY; PUBLIC HEALTH).... environmental health officer
(EHO) a person, employed by a local authority, with special training in such aspects of environmental health as housing, pollution, and food safety (formerly known as a Public Health Inspector). EHOs work closely with other professionals within the local authority and with other agencies, including *Public Health England.... environmental health officer
any of various devices for helping people with hearing difficulties. Environmental aids include *assistive listening devices and alerting devices, such as door bells with visible as well as audible alarms, infrared links to televisions, and vibrating alarm clocks.... environmental hearing aid
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