Apparently happens even to people sleeping in dark rooms so it's not just the moonlight making them feel more awake

>There are about 80 confirmed cases worldwide and 50 more suspected ones, the World Health Organization said. France, Germany, Belgium and Australia reported their first cases Friday. >“I’m stunned by this. Every day I wake up and there are more countries infected,” said Oyewale Tomori, a virologist who formerly headed the Nigerian Academy of Science and who sits on several WHO advisory boards. >“This is not the kind of spread we’ve seen in West Africa, so there may be something new happening in the West,” he said.

Mark your calendars