Clinical Laboratory Kunming Children's Hospital 650228 Province;
Department of Viro-immunology of Medical Biology Chinese Academy of Medical Sciences 650118 Province;
Department of Parasitology Medical University Haiyuan College 650031 Province;
Yunnan Key Laboratory of Children's Major Disease Research Kunming Children's Hospital 650228 Province;
Bone marrow cell morphology; Visceral leishmaniasis; Hemophagocytic syndrome; INFANT; Case report;