In a recent comparative analysis, Luis et al. In the aggregate, zoonotic viruses in >15 virus families have been identified in at least 200 species in 12 bat families around the world ( 3, 9, 11). Bats infected with these viruses seem to show no overt signs of disease ( 10, 11) and, in some cases, appear to be persistently infected ( 12).
Identification of a diverse range of bat paramyxoviruses, including those conspecific with human mumps virus, and phylogenetic reconstruction of host associations suggests numerous host switches of paramyxoviruses from bats to other mammals and birds ( 9).
Molecular studies have demonstrated that bats are natural host reservoirs for several recently emerged high-profile zoonotic viruses, including sudden acute respiratory syndrome–like coronaviruses ( 4) Ebola and Marburg hemorrhagic fever filoviruses ( 5, 6) rabies and rabies-related lyssaviruses and many paramyxoviruses, including rubulaviruses and Nipah and Hendra viruses ( 7 – 9). Bats are a major source of zoonotic viruses worldwide ( 1– 3).
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