There are numerous animal studies including some on primates that show it is safe. (treatlyme.net)
But, even more dangerous, with numerous animals in a single pen, if one of them is sick, they all have to be destroyed. (spotsociety.org)
These cats appear to be feral, possibly being fed by humans, which I'm guessing by the presence of numerous animals around a group of people. (pethelpful.com)