The virus is most likely transmitted to humans from species of mammals, of which he breeds, and who actively hunts reported in the Proceedings of the Royal Society B. The destruction of habitats of wild animals, the sale of these animals and over-hunting them increase the number of contacts with sick individuals and thereby increase the likelihood that some viruses the animals will infect people.
Viruses mammals regularly amaze the man. However, many cases of zooantroponoses (infections common to our and other species; in English literature they are often referred to simply as zoonoses) are unnoticed, as arise in places where medical care is practically unavailable or have nonspecific symptoms. Either due to the fact that the pathogen is almost not transmitted from person to person, and the outbreak quickly dies down. Therefore, the patterns of emergence and spread of zooanthroponoses not completely clear.
Previously it was shown that the more close relatives a person has one or the other, the higher the probability of being infected by his virus. In the same paper showed that plays the role of the number of peopleliving within the area of a specific kind. Also has the value of the reproduction rate of a mammal — a potential source of infection.
Employees of the University of California at Davis, headed by Christine Johnson (Christine Johnson) tested a number of factors, namely, human impact on different animals. The scientists collected data on cases zooantroponoznyh infections of scientific articles published since December 2013. They took into account the number of each species and its dynamics (growing, declining or stable), the conservation status of the animal (endangered, causing the least apprehension, and so on), causes of changes in the number, distribution and several others.