title: Human Babesiosis: Pathogens, Prevalence, Diagnosis and Treatment.
abstract: Human babesiosis is a zoonotic disease caused by protozoan parasites of theBabesiagenus, primarily in the Northeastern and Midwest United States due toB. microti, and Western Europe due toB. divergens. Parasites are transmitted by the bite of the ixodid tick when the vector takes a blood meal from the vertebrate host, and the economic importance of bovine babesiosis is well understood. The pathology of human disease is a direct result of the parasite's ability to invade host's red blood cells. The current understanding of human babesiosis epidemiology is that many infections remain asymptomatic, especially in younger or immune competent individuals, and the burden of severe pathology resides within older or immunocompromised individuals. However, transfusion-transmitted babesiosis is an emerging threat to public health as asymptomatic carriers donate blood and there are as yet no licensed or regulated tests to screen blood products for this pathogen. Reports of tick-borne cases within new geographical regions such as the Pacific Northwest of the US, through Eastern Europe, and into China are also on the rise. Further, newBabesiaspp. have been identified globally as agents of severe human babesiosis, suggesting that the epidemiology of this disease is rapidly changing, and it is clear that human babesiosis is a serious public health concern that requires close monitoring and effective intervention measure.
authors.affiliation: Department of Blood-Borne Parasites, Lindsley Kimball Research Institute, New York Blood Center, New York, NY, 10065, USA.
authors.forename: Rosalynn Louise
authors.initials: RL
authors.lastname: Ord
authors.affiliation: Department of Blood-Borne Parasites, Lindsley Kimball Research Institute, New York Blood Center, New York, NY, 10065, USA.
authors.forename: Cheryl A
authors.initials: CA
authors.lastname: Lobo
keywords: B. divergens; B. microti; Babesia; Transfusion-transmitted babesiosis; malaria; zoonosis