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Phase 4 is characterized by verified human-to-human transmission of an animal or human-animal influenza reassortant virus able to cause “community-level outbreaks”. The ability to cause sustained disease outbreaks in a community marks a significant upwards shift in the risk of a pandemic.
The UK's coronavirus alert level has been increased from level three to four - meaning transmission of cases is high or rising exponentially. The last time the UK was at this level was...
Phase 1. Old: Low risk of human cases. New: No animal influenza virus circulating among animals have been reported to cause infection in humans. What's changed: More specificity. Phase 2. Old: Higher risk of human cases; considered a "new virus in animals, no human cases" phase.
The four phases include “interpandemic,” “alert,” “pandemic,” and “transition.” The phases in the continuum also overlap with the stages of the pandemic risk assessment. From left to right, the three stages of the risk assessment include “preparedness,” “response,” and “recovery.”
Phase 1 represents the lowest level of alert and usually indicates that a newly emerged or previously existing virus is circulating among animals, with low risk of transmission to humans. Phase 6, the pandemic phase, is declared when an outbreak is characterized by globally widespread and sustained disease transmission among humans.
To mark six months since WHO declared a public health emergency of international concern, the highest level of alarm under international law, WHO published an interactive timeline showcasing how the organization has taken action on information, science, leadership, advice, response and resourcing. Key materials: Interactive timeline
To find your county's risk level, explore the county-level map here. A community that has fewer than one daily new case per 100,000 is green. One to 9 is yellow; between 10 and 24 is orange; and...
The government unveiled the system in May 2020. There are five levels: Level five (red) - a "material risk of healthcare services being overwhelmed" Level four - a high or rising level of...
April 20, 2022. As coronavirus cases rise again, fueled by BA.2, the highly contagious Omicron subvariant, New York City is on the cusp of moving to a yellow, or medium, risk level from a green...
Information on COVID-19, the infectious disease caused by the most recently discovered coronavirus.