Runny-nosed hippos test positive for Covid-19 in Belgium - CNN

How the animals were exposed to the virus is unknown -- their caretakers have not shown any Covid-19 symptoms and all tested negative for the virus, the release said.

Imani, who is 14 years old, and Hermien, who is 41, are being kept in isolation for now and cannot be seen by visitors, the zoo said.

"To my knowledge, this is the first known contamination in this species.