File:WHO Pandemic Influenza Phases (2009).png
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Summary
| Description |
English: The information in this table comes from the WHO Pandemic Influenza Phases, revised in 2009. The Pandemic Influenza Phases (2009) are described in several locations, including:
|
| Date | |
| Source | Own work |
| Author | Earthsound |
As a wikitable:
| WHO pandemic influenza phases (2009) | |
|---|---|
| Phase | Description |
| Phase 1 | No animal influenza virus circulating among animals have been reported to cause infection in humans. |
| Phase 2 | An animal influenza virus circulating in domesticated or wild animals is known to have caused infection in humans and is therefore considered a specific potential pandemic threat. |
| Phase 3 | An animal or human-animal influenza reassortant virus has caused sporadic cases or small clusters of disease in people, but has not resulted in human-to-human transmission sufficient to sustain community-level outbreaks. |
| Phase 4 | Human to human transmission of an animal or human-animal influenza reassortant virus able to sustain community-level outbreaks has been verified. |
| Phase 5 | The same identified virus has caused sustained community level outbreaks in two or more countries in one WHO region. |
| Phase 6 | In addition to the criteria defined in Phase 5, the same virus has caused sustained community level outbreaks in at least one another country in another WHO region. |
| Post peak period | Levels of pandemic influenza in most countries with adequate surveillance have dropped below peak levels. |
| Post pandemic period | Levels of influenza activity have returned to the levels seen for seasonal influenza in most countries with adequate surveillance. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:38, 29 April 2009 | | 832 × 1,025 (30 KB) | Earthsound | Vertically centered text in the left column. |
| 19:58, 29 April 2009 |  | 832 × 1,025 (30 KB) | Earthsound | {{Information |Description={{en|1=The information in this table comes from the WHO Pandemic Influenza Phases, revised in 2009. The Pandemic Influenza Phases (2009) are described in several locations, including: *[http://www.who.int/csr/disease/avian_influ |
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