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The classic form of typhus, caused by RICKETTSIA PROWAZEKII, which is transmitted from man to man by the louse Pediculus humanus corporis. This disease is characterized by the sudden onset of intense headache, malaise, and generalized myalgia followed by the formation of a macular skin eruption and vascular and neurologic disturbances.

A dangerous contagious fever marked by great weakness, delirium, and a peculiar rash, or eruptions of red sports on the body.

Typhus fever, an acute infectious and contagious disease, marked by high temperature, great mental and physical depression, and a macular and petechial eruption, lasting about two weeks. There are no specific lesions. The disease occurs where large numbers are crowded together in poorly ventilated quarters and appears to be disappearing as municipal hygiene advances.

An infections fever, marked by great prostration.

An infectious fever accompanied with extreme prostration.

A contagious, infectious, low fever, occurring epidemically, the accompaniment of destitution and overcrowded, ill-ventilated dwellings.

In med., a very fatal form of fever, characterised by much depression, the appearance of an eruption on the skin, and a tendency to putrefaction.

A contagious fever characterized by petechial eruption, high temperature, and great prostration.

A contagious disease, with, eruption, severe fever, and prostration. It occurs under conditions of filth, overcrowding, bad ventilation, poor food, and is conveyed by the breath and skin exhalations. See also under fever.