The Journal of Experimental Medicine, Vol 79, 41-43,
Copyright, 1944, by The Rockefeller Institute for Medical Research New York
VARIATION IN MORBIDITY AND MORTALITY OF MURINE TYPHUS INFECTION IN MICE WITH CHANGES IN THE ENVIRONMENTAL TEMPERATURE
Vicente Moragues M.D.1 and
Henry Pinkerton M.D.1
1 From the Department of Pathology, St. Louis University School of Medicine, St. Louis
Murine typhus rickettsiae injected intraperitoneally in mice of the dba strain caused a uniformly fatal rickettsial peritonitis if the animals were kept at a room temperature ranging from 6573°F. or from 7080°F. With an environmental temperature range of 8598°F., a mortality of less than 25 per cent was observed.
By utilizing different strains of mice and controlling the environmental temperature, conditions may be created under which murine typhus will have any desired degree of mortality. Such conditions have obvious advantages for the evaluation of therapeutic measures in typhus infection.
Submitted on September 11, 1943