The BTV ELISA results ((OD sample/OD negative control) 100) ranged from 72.34 to 453.98 having a mean of 131.62 (SD: 26.268,n= 281). (n= 138) were tested for viral antibodies using enzyme-linked immunosorbent assays (ELISA). Screening for parapoxvirus DNA was carried out Efnb2 on swab samples from 181 reindeer by polymerase chain reaction (PCR), focusing on theB2LandGIFgenes. Antibodies against pestivirus were recognized in two animals from 2017, and antibodies against MCFV were recognized in two reindeer from 2018. Puromycin 2HCl No antibodies were recognized against the other viruses tested. Parapoxvirus-specific DNA was detected in nasal swab samples from two animals sampled in 2019. This study suggests that the investigated viral infections are either not present or present at a low prevalence only, probably not representing a major health threat to this reindeer populace. The lack of exposure to alphaherpesvirus, an enzootic pathogen in most investigatedRangiferpopulations, was unexpected. Keywords:alphaherpesvirus, bluetongue computer virus, gammaherpesvirus, MCFV, parapoxvirus, pestivirus, schmallenbergvirus, serology, viral pathogens, wildlife == 1. Introduction == Reindeer and caribou (Rangifer tarandus), often calledRangifer, consist of several subspecies that are distributed throughout the Arctic region, and the importance of these animals, representing food, fur and other useful materials, is usually reflected among many peoples and cultures. The majority of theRangiferin North America, counting about 2,000,0003,000,000 animals, are wild, and several Puromycin 2HCl populations have experienced dramatic reductions in the past few decades [1,2]. Most of the 3,000,0004,000,000 wild and semi-domesticated reindeer in Eurasia belong to the Eurasian tundra reindeer subspecies,Rangifer tarandus tarandus[2]. In Fennoscandia today, reindeer herding is based on semi-domesticated tundra reindeer, and represents an important livelihood Puromycin 2HCl and cultural corner stone of the Sami people [3]. Eurasian tundra reindeer (Rangifer tarandus tarandus) were launched from Norway to Iceland on four occasions; in 1771 (n= 1314, extinct around 1783), 1777 (n= 30, extinct around 19201930), 1784 (n= 3035, probably extinct around 1937), and finally, in 1787, when 30 female reindeer and five reindeer bulls were gathered in Avjovarre, Finnmark, Norway, and shipped to Vopnafjrdur around the north-east coast of Iceland [4]. This latter introduction was successful. Aerial surveys to assess populace size, sex, and age composition of the population are conducted each year in July and during the rut in the fall [5]. In 2000, the total population (summer time stock, i.e., after calving, before harvest) was estimated to consist of about 3000 animals. The population doubled from the year 2000 to 2008 but has since then been stable or has slightly decreased [6]. Although the original purpose of introducing reindeer to Iceland was to establish reindeer herding [4], the animals have since the introduction been free-ranging and are still managed as a wild populace. The reindeer populace is usually today distributed in the north-east and south-east of Iceland [5], and the population is divided into 9 different management zones (Area 19). Although there are a few reports that this arctic fox (Vulpes lagopus), which is the only non-introduced terrestrial mammal in Iceland, may prey on newborn reindeer calves [7] you will find no reindeer predators in Iceland. Thus, the main tool for regulating the population is usually hunt, which is usually conducted through the purchase of a license for any bull or a female, and with the requisite of the hunt being associated with a licensed hunting guide. Calves are normally not hunted. The hunting quotas for each management zone are based on the annual counts and populace estimates. For the three hunting seasons during the project period (20172019), the total reindeer populace, after calving and before hunt, consisted of 60007000 animals, of which a Puromycin 2HCl total of 4177 reindeer were hunted, approximately 13001400 animals per year. Of the hunted reindeer, 71% were females [6,8,9]. The hunt is considered the most important mortality factor for Icelandic reindeer. Other mortality factors, as indicated through the investigations of 252 reindeer carcasses (19912013; Snfellsherd, Area 1 and 2), were car accidents (40%), and other types of traumas associated with rut, drowning, illegal hunt, calving complications, and snow avalanche ( 35%), leaving approximately 25% with unknown cause of death [10]. Several viruses that are pathogenic to reindeer and may be relevant for the.