A person with leukopenia has a low number of white blood cells, or leukocytes, in their blood. A low white blood cell count may make a person more likely to contract an infection. White blood cells ...

Leukopenia may be seen in sepsis as one of the systemic inflammatory response syndrome (SIRS) criteria, ie, white blood cell count below 4000, and may portend a poor prognosis. But severe leukopenia, ...

Human granulocytic anaplasmosis was first reported in 1990 when a patient in Wisconsin became ill following a tick bite and died two weeks later. Blood smears showed bacteria that were similar to ...