Surveillance of emerging infectious diseases in wild non-human primates in Kenya: Successes and challenges

Abstract

Emerging infectious diseases (EIDs) originating from wildlife present a significant threat to global health, security, and economic growth, thus combatting their emergence is a public health priority. Humans and non-human primates (NHPs) exhibit a high degree of overlap in their genetic and physiological similarities, hence making them susceptible to majority of pathogens that can cross the primate species boundaries. However, efforts to understand the potential infectious disease-causing pathogens harbored by wild primate populations has lagged and is yet to be fully explored. Disease surveillance in wildlife to identify probable infectious disease outbreaks has remained a challenge especially in developing countries due to logistical and financial constrains associated with both periodic and longitudinal sample collection. Such loopholes have hampered the preparedness to handle the emerging infectious diseases whenever they arise. In this review we focus on successes, challenges, and proposed solutions for EID surveillance in non-human primate populations in Kenya. We discuss,1) mechanisms of cross species transmission of EIDs, 2) the role of NHPS in EID transmission, 3) results from past NHP pathogen surveillance projects in Kenya and 4) challenges and proposed solutions for NHP-EID surveillance. Finally, we propose that more studies need to include investigations into understanding how cross species transmission occurs in diverse NHP populations and how this impacts one health.