Related Experiment Video
Updated: Jun 19, 2026
08:23
Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research
Published on: August 31, 2013
COLORADO TICK FEVER AND DENGUE : AN EXPERIMENTAL IMMUNOLOGICAL AND CLINICAL COMPARISON
L Florio1, W M Hammon, A Laurent
1George Williams Hooper Foundation for Medical Research, University of California, San Francisco, and the Department of Public Health and Laboratory Diagnosis, University of Colorado School of Medicine, Denter.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Dengue and Colorado tick fever are distinct diseases. Studies show no cross-immunity between dengue and Colorado tick fever, with hamsters susceptible only to tick fever.
Area of Science:
- Virology
- Infectious Diseases
- Immunology
Background:
- Dengue and Colorado tick fever are distinct viral illnesses.
- Understanding their immunological relationship is crucial for public health.
Purpose of the Study:
- To investigate the immunological relationship between dengue and Colorado tick fever.
- To determine if cross-immunity exists between these two viral infections.
Main Methods:
- Human inoculation studies with dengue and Colorado tick fever viruses.
- Re-inoculation of recovered patients to assess immunity.
- Experimental inoculation of hamsters with both viruses.
Main Results:
- Six individuals inoculated with dengue developed the disease; two were immune upon re-infection.
- Four individuals inoculated with Colorado tick fever developed the disease, with one previously from an endemic area remaining well.
- One patient developed both dengue and Colorado tick fever sequentially.
- Hamsters were susceptible to Colorado tick fever but not dengue.
- No cross-immunity was observed between dengue and Colorado tick fever.
Conclusions:
- Dengue and Colorado tick fever are distinct viral entities.
- These viruses do not confer cross-immunity in humans or hamsters.
- Further research into distinct viral pathogenesis and host responses is warranted.
