Persistent babesiosis in a Rhesus macaque (Macaca mulatta) infected with a simian-human immunodeficiency virus.

Abstract

BACKGROUND: A rhesus macaque developed chronic anemia, lymphocytic leukocytopenia, fever, and anorexia while immunodeficient following inoculation with a simian-human immunodeficiency virus. METHODS: A complete blood count, peripheral blood smear, polymerase chain reaction and gene sequence were performed. RESULTS: Blood smears demonstrated persistent intraerythrocytic piroplasms with rare Maltese cross forms. Babesia microti-like protozoa were confirmed by polymerase chain reaction and sequencing of the 18S ribosomal RNA gene. CONCLUSION: With continued use of non-human primates as models for human diseases, infection and complications from babesiosis should be monitored.