Ebola will be the one most talked about, but there are a number of other Viruses that will causes issues.
Chagus Disease
Chikungunya Virus
Crimean-Congo Hemorrhagic Fever
Dengue Fever
Ebola
Hantavirus
Japanese Encephalitis Virus
Kyasanur Forest Disease (a.k.a. Monkey Fever)
Lassa Fever
Nipah Fever
West Nile Virus
Zika Vius
This is not to say that these viruses will be everywhere at any given time – No one can make that prediction – but these are the virused to keep an eye on.