CBC news March 06, 2011  

Tracy Marcotullio, the shelter manager, said pet owners should be aware of Lyme disease all year, even in winter.

“The reason that we saw this case in the wintertime is because the tick that causes Lyme disease, it can take up to five or six months sometimes to see symptoms,” Marcotullio said. “This dog would have had the tick bite in the summertime, contracted the Lyme disease then, but not shown symptoms for several months.”

Read more here:

http://www.cbc.ca/news/canada/new-brunswick/story/2011/03/06/nb-spca-lyme-disease.html?ref=rss