|   |  |  Marburg virus is an antigenically distinct virus, unrelated to any of almost 200 viruses with which it has been compared                                                      [10]                                             .   |  |  Human convalescent and guinea pig immune sera showed negative results when tested by HI or CF against a large number of arbovirus and non-arbovirus antigens, including rhabdoviruses, Tacaribe group agents, and viruses causing hemorrhagic disease manifestations in man, monkeys or deer                                                       [10]                                             .   |  |  Marburg virus was shown to be distantly related, by IFA, to the subsequently isolated Ebola virus. See Ebola virus registration card.   |  |   |   
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