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Multicolor Flow Cytometry Analyses of Cellular Immune Response in Rhesus Macaques
Published on: April 22, 2010
The effect of measles vaccination in rhesus monkeys (Macaca mulatta)
Abstract:
30 rhesus monkeys (Macaca mulatta), born into a breeding colony, received measles vaccination when aged between 3 and 26 months; 28 of them were re-vaccinated 5 to 7 months later. Measles virus antibody was measured by haemagglutination-inhibition at the time of each vaccination and again 3 to 6 weeks later. Only 2 out of 9 animals aged less than 6 months responded to vaccination, whereas 10 out of 14 older animals showed 4-fold or greater rises. Re-vaccination of the younger group when aged 8 to 10 months resulted in a marked rise in antibody.
Insights
Infants under six months show poor response to measles vaccination. However, re-vaccination at 8-10 months significantly boosts measles virus antibody levels in young rhesus monkeys.
Area of Science:
- Veterinary Immunology
- Virology
- Primate Research
Background:
- Measles vaccination is crucial for preventing disease outbreaks.
- Understanding optimal vaccination timing in non-human primates is essential for research models.
Purpose of the Study:
- To evaluate the immunogenicity of measles vaccination in rhesus monkeys at different ages.
- To assess the efficacy of revaccination in young animals.
Main Methods:
- Thirty rhesus monkeys received primary measles vaccination at 3-26 months of age.
- Antibody levels were measured using haemagglutination-inhibition assays.
- Animals were re-vaccinated 5-7 months later, with antibody levels reassessed.
Main Results:
- Only 2 of 9 monkeys under 6 months responded to initial vaccination.
- 10 of 14 older monkeys (age not specified but >6 months) showed a significant antibody rise.
- Re-vaccination of the younger group at 8-10 months induced a marked antibody increase.
Conclusions:
- Rhesus monkeys under 6 months of age have a limited response to measles vaccination.
- Re-vaccination is effective in eliciting a robust antibody response in younger animals at a later age.
- Age is a critical factor influencing measles vaccine efficacy in rhesus monkeys.
