This is not good. Famine is made out of aggressive diseases like this. It seems to be spreading across Europe pretty fast.
That brought home to me the idea that the concept of living off the land if things get rough, even where the people are spread thin, is a fragile plan.
(Of course, the tinfoil hatter in me mutters that this could be 'arranged' by a government or other group who wished to herd the humans to food distribution points or refugee camps. With little or no forage, few could endure/resist the crying of their own hungry children.)