Mexico has a terrible infectious disease problem? Enough racist fearmongering - give me more pork carnitas. Wonder why I can't think and have a terrible headache. Couldn't be tapeworms in my head, could it? Nah. ;)
Actually, I remember an article describing this scenario on Freerepublic recently. A Mexican fellow loved carnitas and had headaches. The doctors found a large pork tapeworm in his head.
There was a show on (I think) Discovery Health a couple of weeks ago about a young orthodox jewish man who started having seizures, and no one could figure it out at first because neither he nor his family eats pork. Then they found the parasite in his brain. Turns out they had a Mexican maid, Thypoid Maria if you will, who had questionable hygiene habits. They tested her and found the parasite. It was a very nasty story, all told.