Insect-based Chikungunya Vaccine Provides Long-lasting Protection
Author Information
Author(s): Adam Awadalkareem, Woolsey Courtney, Lu Hannah, Plante Kenneth, Wallace Shannon M., Rodriguez Leslie, Shinde Divya P., Cui Yingjun, Franz Alexander W. E., Thangamani Saravanan, Comer Jason E., Weaver Scott C., Wang Tian
Primary Institution: University of Texas Medical Branch
Hypothesis
Can the EILV/CHIKV vaccine induce rapid and durable protection against chikungunya virus in cynomolgus macaques?
Conclusion
The EILV/CHIKV vaccine is safe and provides rapid and long-lasting protection against chikungunya virus in cynomolgus macaques.
Supporting Evidence
- EILV/CHIKV protected macaques from wild-type CHIKV infection one year after vaccination.
- Transcriptome analysis showed robust immune responses in vaccinated macaques.
- EILV/CHIKV induced quicker and more robust type I interferon responses than the inactivated WT virus vaccine.
- Guinea pig sensitization studies indicated no hypersensitivity reactions to the vaccine.
Takeaway
A new vaccine made from insects can help protect monkeys from getting sick from a virus for a long time after just one shot.
Methodology
Cynomolgus macaques were vaccinated with either a low or high dose of EILV/CHIKV and then challenged with wild-type CHIKV to assess protection and immune responses.
Potential Biases
Potential bias in the selection of animal models and the interpretation of immune responses.
Limitations
The study primarily involved cynomolgus macaques, which may not fully represent human responses.
Participant Demographics
2.5 to 3.5 year-old female and male cynomolgus macaques.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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