Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 757)

Change:  Infected: 20 percent to 40 percent of the world's populationU.S. deaths: About 675,000Worldwide deaths: 20 million to 50 million Asian Flu 1957-58 Infected: UnknownU.S. deaths: About 70,000 <Worldwide deaths: 1 million to 2 million Hong Kong Flu 1968-69 Infected: UnknownU.S. deaths: About 34,000Worldwide   View changes from previous version. (Word count: 757)

Change: get under control. Conservative estimates state that more than 17 million birds were culled at a cost of over $65 million.1992, Mexico: An outbreak of H5N2 avian flu began in Mexico in 1992. The outbreak started with   View changes from previous version. (Word count: 688)

Change: Kofi Annan delivered a video message to the International Pledging Conference on Avian and Human Influenza saying that a massive coordinated global response was needed against the threat of avian flu.See alsoDiagnosing and treating bird fluMutation and antigenic shiftPreventionVaccinations and antivirals   View changes from previous version. (Word count: 689)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 674)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 674)

Change: 1983,1983-84, United States: An outbreak of avian influenza took two years to control. Conservative estimates state that more than 17 million birds were culled at a cost of over $65 million.1992, Mexico: An outbreak of H5N2 avian flu began in   View changes from previous version. (Word count: 673)

Change: that officials destroyed more than 17 million birds at a costthatover of more than $65 million.1992, Mexico: AnotherAn outbreak of H5N2 avian flu began in Mexico in 1992. The outbreak started with   View changes from previous version. (Word count: 659)

Change: AnotherAn outbreak of H5N2 avian flu began in Mexico in 1992. The outbreak started with a relatively low capability of causing disease and evolved into a highly fatal form. It wasn’t effectively controlled until 1995.2002, Virginia: After an outbreak of H7N2 among   View changes from previous version. (Word count: 667)

Change: also were documented the next year in Turkey and Romania.North America 1983, United States: An outbreak of avian influenza took two years to control. Conservative estimates state that officials destroyed more than 17 million birds at a cost of more than $65 million.1992, Mexico: Another outbreak   View changes from previous version. (Word count: 669)