ART4 and viral hemorrhagic fever: We, therefore, firstly constructed a panel of triFilo adenoviral vectors encoding varying constellations of the glycoproteins from the three filovirus family members most likely to cause a severe viral haemorrhagic fever (VHF) outbreak: Zaire ebolavirus (EBOV), Sudan ebolavirus (SUDV), and Marburg virus (MARV) (Figure 1a).