Gliselle Marin joins the “Bat-a-thon,” a group of 80-some bat researchers who converge on Belize each year to study these winged mammals.

Marburg virus is hard to detect early on--and goes on to kill about half its victims. Researchers hope to work quickly during this outbreak to make progress on emerging vaccines and treatments.

A case of the virus, which claimed a 12-year-old boy's life, has sparked fears of a new outbreak in India. Researchers fear that the deadly disease has the potential to cause global outbreaks as well.