Nonhuman primate model of pertussis.

Area of Science:

• Microbiology
• Immunology
• Veterinary Medicine

Background:

• Pertussis, a contagious respiratory illness caused by *Bordetella pertussis*, is increasing despite high vaccination rates.
• Current understanding of pertussis pathogenesis and vaccine efficacy is limited by the lack of suitable animal models.
• Existing models do not fully recapitulate the spectrum of human pertussis disease.

Purpose of the Study:

• To develop a nonhuman primate model that accurately mimics human pertussis.
• To facilitate research into pertussis pathogenesis and vaccine-induced immunity.
• To enable evaluation of existing and novel pertussis vaccines and therapeutics.

Main Methods:

• Inoculation of rhesus macaques and olive baboons with wild-type *Bordetella pertussis*.
• Clinical evaluation of inoculated animals to assess disease development.
• Re-challenge of recovered baboons to assess immune memory (anamnestic response).

Main Results:

• Only 25% of rhesus macaques exhibited clinical pertussis.
• 100% of inoculated olive baboons developed clinical pertussis.
• Baboons demonstrated a robust anamnestic response upon secondary infection.

Conclusions:

• The olive baboon serves as a superior animal model for clinical pertussis.
• This model will advance research on pertussis disease mechanisms and immune responses.
• The baboon model is crucial for evaluating current vaccines and developing new ones.