Area doctors asked to send possible influenza throat cultures to state or Metro Health labs. U.S. declares public health emergency for swine flu Swine flu confirmed in NYC high school students Swine flu virus worries Mexico City travelers WHO declares international concern over swine flu 11 cases of swine flu confirmed in U.S. Mexico fights swine flu with 'pandemic potential' Chron.com's SciGuy: You've got swine flu questions. We've got answers. Mashable: How to track swine flu online Info: Q&A | Past pandemics | WebMD | CDC | Health