Strong quake sways tall buildings, adds to swine flu anxiety in already-tense Mexico CityMEXICO CITY — A strong earthquake struck central Mexico on Monday, swaying tall buildings in the capital and rattling nerves in a city already tense from a swine flu outbreak suspected of killing as many as 149 people nationwide Powerful earthquake rocks tall buildings in Mexico CityMEXICO CITY — A strong earthquake struck central Mexico on Monday, swaying tall buildings in the capital and sending office workers into the streets. |