Video: Influenza and the risks of pandemic
Throughout history there have been a number of pandemics, such as smallpox, Spanish flu and more recently HIV and the 2009 A/H1N1 swine flu pandemic
The 2009 outbreak of a new strain of Influenza A virus subtype H1N1 created concerns that a new pandemic was occurring. In the latter half of April, 2009, the World Health Organization’s pandemic alert level was sequentially increased from three to five until the announcement on 11 June 2009 that the pandemic level had been raised to its highest level, level six. This was the first pandemic on this level since 1968.
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