Recently an epizootic, reported to be due to a morbillivirus infection
, affected the lion population of the Tanzanian Serengeti National Par
k. A morbillivirus phosphoprotein (P) gene fragment was amplified by P
CR from tissue samples of several affected lions. Sequencing of the am
plificates and subsequent phylogenetic analyses revealed that a wild-t
ype strain of canine distemper morbillivirus (CDV) was involved. Vacci
nation of the local domestic dog population with proven safe CDV vacci
nes is proposed.