They came to this conclusion after performing analyses of ancient DNA extracted from an 8,000-year-old sheep bone, in which ...

while the prevalence of Brucella abortus/suis went from 3.5 percent to 10.9 percent. Pathogen exposure varied depending on the bears’ diet, as well as their sex. Females had higher rates of ...

As the Arctic warms, polar bears face a growing risk of contracting viruses, bacteria and parasites that they were less likely to encounter just 30 years ago, research has revealed.

Five of these pathogens had become more common in the later samples: the parasites that cause toxoplasmosis and neosporosis, the bacteria that cause rabbit fever and brucellosis, and the canine ...