Guillain–Barré is something that happens. It is rare, as you've mentioned, and it is associated with all kinds of different viral infections. There's a small number of cases of Guillain–Barré in Canada every year. We're watching that and looking to see if there has been any increase. You're probably aware from the media there has been Guillain–Barré associated with Zika, but you would expect that because viral infections can cause Guillain–Barré syndrome.
On March 7th, 2016. See this statement in context.