sentinel animal


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sen·ti·nel an·i·mal

an animal deliberately placed in a particular environment to detect the presence of an infectious agent, such as a virus.
An animal susceptible or sensitive to a particular environmental factor—e.g., a toxin, pathogen, radiation—whose illness or death serves to warn humans of an impending danger
References in periodicals archive ?
Selected pieces of wax-embedded spinal cord tissue from the sentinel animal were extracted and postfixed in 2.
Local WNV surveillance networks collected and tested for WNV or antibodies specimens from human and veterinary patients, dead birds, captive sentinel animals (mostly chickens), wild-caught birds, and mosquitoes.
On May 3, 2007, the first sentinel animal in the program (4-year-old Holstein Friesian cow, North-Rhine Westphalia, Germany) tested positive for BTV antibodies and genomes in a regional laboratory (Krefeld, Germany).
dagger]) Day 0 was defined as the day the sentinel animals arrived at the farm in Nyakatonzi (Kasese District).
Carnivores such as dogs and foxes, which prey on rodents and eat their fresh carcasses, are valuable sentinel animals for plague serosurveillance in disease-endemic foci, although their infections are usually asymptomatic (2,3).
Because bacteremia among hosts from Zielonka was frequent (range 12%-26%) and boars are quite abundant in Europe, they could be used as sentinel animals for detecting A.
After each natural infection, sentinel animals seroconverted, and serum scored positive in the cNP-ELISA within 2-4 weeks.
Use of sentinel animals has been suggested as a cost-effective way to infer prevalence in host populations when direct estimation in such populations is difficult (13).
Virus isolations from sentinel animals and genetic characterizations of these strains indicated continuing circulation of a subtype IE genotype, which was isolated from equines during the recent VEE outbreaks.
These findings in turn raised questions about factors involved in human susceptibility, risks of pesticide exposure, efficacy of mosquito control, the value of sentinel animals in surveillance, and the roles played by various species in virus transmission and amplification.
These data include reports of WNV-infected mosquitoes, sentinel animals, dead birds, and ill humans and horses (5).
Captive sentinel animals, compared to all other arbovirus surveillance systems, provide more precise data on the location and time in which virus transmission has occurred.