Practical preventive medicine . road. (Am. Jour. Pub. Health, 7-8.) EUROPEAN RELAPSING FEVER i. Infective Agent.—Spironema recurrentis {Syn. Spirillumobermeirii). 2. Source of Infection.—Typical and atypical human cases. 3. Portal of Exit.—In the blood abstracted from patients. 4. Route of Transmission.—By the agency of the common bedbug, Cimex lectularius. (Fig. 83). The duration of the periodof extrinsic incubation is unknown. Possibly also by bodylice. 5. Portal of Entrance.—Through puncture wounds made inthe skin by bugs and lice, and also through abrasions made byscratching, into which ha
Practical preventive medicine . road. (Am. Jour. Pub. Health, 7-8.) EUROPEAN RELAPSING FEVER i. Infective Agent.—Spironema recurrentis {Syn. Spirillumobermeirii). 2. Source of Infection.—Typical and atypical human cases. 3. Portal of Exit.—In the blood abstracted from patients. 4. Route of Transmission.—By the agency of the common bedbug, Cimex lectularius. (Fig. 83). The duration of the periodof extrinsic incubation is unknown. Possibly also by bodylice. 5. Portal of Entrance.—Through puncture wounds made inthe skin by bugs and lice, and also through abrasions made byscratching, into which have been rubbed the body juices ofcrushed bugs. 6. Incubation Period. {Intrinsic).—From two to twelvedays. 200 PRACTICAL PREVENTIVE MEDICINE 7. Period of Communicability.—Unknown. Regard a patientas possibly infective until recovery is complete. 8. Methods of Control. The Injected Individual.^-{d) Diag-nosis: Clinical manifestations confirmed by the observationof the spirillum in blood smears taken during a-2•°3 3.§ §1 (&) Isolation: Same as for typhus. (c) Immunization: None. (d) Quarantine: Of exposed susceptibles for twelve days afterthe last exposure. DISEASES TRANSMISSIBLE BY INSECTS 201 (e) Concurrent Disinfection: None.(/) Terminal Disinfection: Same as for Measures.—Same as for typhus, extending the ac-tivities to include the bed bugs.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectprevent, bookyear1920
