Figure 1.

Distribution of Rousettus aegyptiacus bats in Africa (dark gray shading), showing locations of known Marburg virus disease spillover events into humans (red dots) and Egyptian rousette bats (R. aegyptiacus) that previously tested positive for Marburg or Ravn viruses (yellow dots). The bat distribution was adapted from the International Union for Conservation of Nature and Natural Resources Red List of Threatened and Endangered Species distribution maps (https://www.iucnredlist.org), except for the shaded area in Sierra Leone indicated by the yellow dot and black arrow, which represents a range extension for Egyptian rousette bats not shown on the Red List website (7).