The Grand Wizard of Many Things, reading a query from the lens and reaching into the Box of Answers to find the reply:

How long after a werewalrus bite before lycanthropy sets in?

Huh, blasted input coming along the Northern routes seems to jiggle a bit these days... have to get Evergreen to go and check for fractures along it. If it's another blasted yeti sledging accident then we'll have to think about running it underground. Blast. We should never have let the far frozen North get online. More blasted trouble than they're worth up there. Pipes get iced up and the frost cracks the mirrors in the bends.

...about six weeks, less during the thaw.

[Spells out in cards held up to the lens, in rapid succession: (the Grand Wizard of Many Things would probably rate as the second most dexterous handler of cards in the whole wide world, were such things to be measured)]

6 WEEKS; LESS IN THAW