If I'm smelling bat urine from the attic, is my health at risk?

We live in Uganda and have a terrible problem with bats in our attic. Perhaps one day we will figure out a way to get them out of there and seal it off so they can't re-enter. In the meantime we have managed to seal off our ceiling such that they no longer enter the house, nor do their droppings. However, we are smelling the urine up there. At times it is quite a strong smell. Is this hazardous to our health?