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West Nile in Migrating Birds
Migration is has been a, definitely a thing that we've spent a lot of time thinking about. So overwintering mechanisms for west and alvirus are not well understood. And maybe that could a tribute to why we see it flare up in different places from year to year. But when we did find migrantes that were infected with westnol virus, they were heading back down south. They weren't heading north. It really seemed like it wasn't migratory birds that were constantly receding infection.