Scientists are soon to test cats, dogs and even rats as they seek to understand the mysterious Mers infection.
While the virus that causes it has been found widely in camels, researchers say it could be lurking in other species.
One expert told BBC News that the hunt is likely to soon extend to animals that have close contact with people.
Mers was originally found in a patient from Bishah in Saudi Arabia but since then almost 600 cases of the infection have been discovered around the world, with around 30% of those who get sick dying from the illness.
Researchers believe the coronavirus that causes the infection crossed over from animals.
What is Mers?
- It’s a type of coronavirus
- These cause respiratory infections in humans and animals
- Symptoms include fever, cough and breathing difficulties
- It can cause pneumonia and sometimes kidney failure
- Experts believe the virus is not very contagious
- They are unclear on the best treatment but advise good hand hygiene to prevent transmission