it takes 24-48 hours for a deer tick to transmit lymes!
i had a couple on me this year already, no big deal... if you want a sure fire way to remove them without breaking their heads, use alcohol... pure stuff works best in a shot glass seal it around the little bugger on the skin and let em have it.. they will usually back right out after a few seconds the longest i had one in me doing that was like 3 minutes.. he was tough ittle bugger.. but remember if you get it with a tweezers and you miss the head it can stil transmit lymes to you! so if you have any dout get checked!
here is a website!
http://www.uwex.edu/ces/wihort/pests/DeerTicks.htm