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Bundibugyo ebolavirus is a newly identified Ebolavirus species. The virus was responsible for a recent hemorrhagic fever outbreak in Uganda with an approximate 30% case fatality rate. In this study, we compared the pathogenesis of Bundibugyo with highly lethal Zaire Ebolavirus by using in vitro human PBMCs. We found that PBMCs infected with Bundibugyo ebolaviruses resulted in 1 to 2 log lower virus...
Ebola virus (EBOV) infections are characterized by dysregulation of normal host immune responses. Insight into the mechanism came from recent studies in nonhuman primates, which showed that EBOV infects cells of the mononuclear phagocyte system (MPS), resulting in apoptosis of bystander lymphocytes. In this study, we evaluated serum levels of cytokines/chemokines in EBOV-infected nonhuman primates,...
In fatal Ebola virus hemorrhagic fever massive intravascular apoptosis develops rapidly following infection and progressing relentlessly until death. While data suggest that T lymphocytes are mainly deleted by apoptosis in PBMC of human fatal cases, experimental Ebola infection in animal models have shown some evidence of destruction of lymphocytes in spleen and lymph nodes probably involving both...
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