Dilla University, P.0. Box 419, Dilla, Ethiopia;
Aklilu Lemma Institute of Pathobiology, Addis Ababa University, P.0. Box 1176, Addis Ababa, Ethiopia;
Aklilu Lemma Institute of Pathobiology, Addis Ababa University, P.0. Box 1176, Addis Ababa, Ethiopia;