|Regional Update. Pandemic (H1N1) 2009. (published on August 7, 2009)|
This report was prepared based on the indicators in the document Human infection with pandemic (H1N1)2009 virus: updated interim WHO guidance on global surveillance available at this link.
The qualitative indicators for surveillance of the Pandemic (H1N1) 2009 are described in Table 3 of this report. The information presented herein has been obtained through the official sites of the Ministries of Health of the countries in the Region as well as official reports submitted by the International Health Regulation (IHR) National Focal Points.
Update on the Qualitative Indicators
For epidemiological week 30 (EW 30, July 26 to August 1) 16 countries have reported updated information to the Pan American Health Organization (PAHO) regarding the qualitative indicators to monitor the pandemic (H1N1) 2009 . Data from the most recent week of notification is considered for the purposes of the analysis below (EW 27 – 30).
Currently, 22 countries in the Region report having widespread geographical distribution of the pandemic (H1N1) 2009 virus. Three more countries (Colombia, Panama and Saint Lucia) have been added to this group during EW 30 Dominica reports no pandemic (H1N1) 2009 activity during EW 30 (Map 1).
Regarding the trend of respiratory disease, seven countries report an increasing trend, namely Belize, Bolivia, Guatemala, Haiti, Paraguay, Peru, and Saint Lucia. From these countries, Saint Lucia is the only country which reported a change in trend when comparing with the previous epidemiological week (Map 2).
Regarding the intensity of acute respiratory disease, seven countries (Argentina, Canada, Cuba, El Salvador, Guatemala, Mexico, and Paraguay) inform having high intensity when comparing to the same period in previous years. The number of countries reporting high intensity remains the same as last epidemiological week.
Argentina and El Salvador have reported a change from very high to high intensity; while Chile and Uruguay have changed from high to low/moderate intensity (Map 3).
No countries report severe impact on health-care services, however, 7 countries (Argentina, Bolivia, Cuba, Ecuador, El Salvador, Guatemala and Paraguay) reported experiencing moderate impact and fifteen inform low impact on health care services (Map 4).
Conversely, El Salvador reports experiencing a lower category for trend, intensity and impact on health care services. Similarly, Chile and Uruguay lowered their indicators for intensity and impact on health care services.
The World Health Organization (WHO) does not recommend any restrictions to travel or the closing of borders due to pandemic (H1N1) 2009.
Update on the number of cases and deaths
As of August 7, 2009, a total of 102,905 confirmed cases have been notified in all 35 countries in the Americas Region. A total of 1,274 deaths have been detected among the confirmed cases in 20 countries of the Region.
In addition to the figures displayed in Table 2, The following overseas territories have confirmed cases of pandemic (H1N1) 2009: American Samoa, U.S. Territory (8); Guam, U.S. Territory (1); Puerto Rico, U.S. Territory (20); Virgin Islands, U.S. Territory (49); Bermuda, UK Overseas Territory (1); Cayman Islands, UK Overseas Territory (14); British Virgin Islands, UK
The distribution of cases and deaths at the first sub-national level can be found in the interactive map available through the following link: http://new.paho.org/hq/images/atlas/en/atlas.html
Update on the Virologic Situation
Virological data obtained from Ministry of Health websites, from Ministry of Health reports sent to PAHO and notifications from National Influenza Centers (NICs) is included below.
For the purposes of this analysis, only countries that differentiated between sub-typed influenza A results were selected. We excluded from the calculations of the percentages results from samples of influenza that were not subtyped or were un-subtypeable.
Among viruses that were subtyped as influenza A (seasonal H1, H3 or pandemic (H1N1) 2009), the predominant virus is pandemic (H1N1) 2009. Nevertheless, in Colombia there still appears to be circulation of seasonal influenza A viruses (28.3% H1 and 30.4% H3).
The data and information in this report will be updated on a weekly basis and available here.
This report was prepared based on the indicators in the document Human infection with pandemic (H1N1) 2009 virus: updated interim WHO guidance on global surveillance available here.
The information presented herein has been obtained through the official sites of the Ministries of Health of the countries in the Region as well as official reports submitted by the International Health Regulation (2005) National Focal Points.
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Regional Office for the Americas of the World Health Organization