They are preparing for an 'outbreak of' the virus.
an 'outbreak of' violence/war
a cholera 'outbreak'
(..) Some of our men encountered a very organized pack of marauders... nomads, all women. We think they're responsible for bringing in this recent outbreak. - Outbreak? - Yeah. Another dozen infected. We lost two officers this morning. But the rest are isolated, (..)2016 TvShow: 12 Monkeys Title: Lullaby Season: 2 Episode 8