After a four-hour drive over dusty, potholed roads, the vets finally reach their first destination - Yagoua in the Far North region of Cameroon.
The team consults with the local animal health services and then heads further north towards the Chad border to a village where goats have reportedly been dying.
Off the main roads, driving becomes more difficult. Bumpy dirt tracks pass through groups of mud huts. With no lighting or village names, navigation in rural Cameroon is not easy.
Finally, the team reaches Gabarey Waka, the scene of the reported disease outbreak. It is five o'clock - one hour until sunset when the village will be enveloped in darkness.
Inquisitive children in ragged t-shirts leave their huts to greet the visitors. Two little boys, accompanied by their father, are holding baby goats. The animals, like many in the herd, are sick.
They have diarrhoea, infected eyes and sores in their mouths. The farmer is worried. Many of his goats have already died. They are his family's main source of food and its only source of income.
The vets, from LANAVET, Cameroon's National Veterinary Service, get to work. In just a few minutes, they set up a small table with chairs and unload a range of sophisticated sampling equipment from the back of their vehicle. They also change into their protective veterinary gear: rubber gloves, brown coats and boots.
By now, the whole village has gathered to observe the unfolding spectacle. After clinical inspections, the vets take blood samples from the animals, process them and place them into a small device, bearing the IAEA logo, which is linked to a laptop and powered from the car battery.