Pair aged 22 and 23 expected to make full recovery, as 11 lions and two tigers at the zoo also test positive
Two hyenas at the Denver zoo have tested positive for Covid-19, the first confirmed cases among the animals worldwide.
Samples from a variety of animals at the zoo, including the spotted hyenas, were tested after several of its lions became ill, according to the National Veterinary Services Laboratories (NVSL). The hyena samples tested presumptive positive at a lab at Colorado State University and were confirmed by the national lab.