Pandemic (H1N1) 2009 regional update 22 Jul 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: http://www.who.int/csr/disease/swineflu/notes/h1n1_surveillance_20090710/en/index.html). The qualitative indicators for surveillance of the Pandemic (H1N1) 2009 are described in Table 4 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
As of Epidemiological Week 28 (EW 28, July 12 to 18) 34 of the 35 countries in the Region of the Americas have reported presence of the pandemic (H1N1) 2009 virus.
For many countries in the Region, not all of the information is available regarding the qualitative indicators for the monitoring of pandemic (H1N1) 2009 (Table 1). The data that have been used to evaluate the indicators for intensity and trend of respiratory disease activity, as well as virologic monitoring, correspond to epidemiological week 26 to 28, depending on each country. As countries become familiar with the new notification requirements, it is expected that more complete and up-to-date information will become available.
Of the countries with available information, 19 exhibit widespread geographical distribution, four more than in epidemiological week 27 (Colombia, Paraguay, Peru and Uruguay) (Map 1).
Regarding the trend of respiratory disease in the Region, information is available for 13 countries (Map 2); six of these (Argentina, Belize, Chile, Haiti, Paraguay and Venezuela) display an increasing trend.
As to the intensity of acute respiratory disease, information is available for only 15 countries (Map 3). Of these, two display very high intensity (Chile and Argentina) while five are categorized as having high intensity (Canada, El Salvador, Mexico, Paraguay and Uruguay). Nineteen countries do not have information available for this indicator.
Ten countries have provided information regarding the impact on health-care services (Map 4), none of which were categorized as high; however, three countries were categorized as moderate.
Of the countries for which information is available, the situations in Chile and Argentina are worthy of note as both exhibit widespread geographical distribution, an increasing trend and a very high intensity of acute respiratory disease. Also worth mentioning is that Canada, Mexico, El Salvador, Paraguay and Uruguay all exhibit widespread distribution and a high intensity of acute respiratory disease (which in the case of Paraguay is also accompanied by an increasing trend in respiratory disease activity).
In the Americas Region, 34 of the 35 countries have reported confirmed cases of the pandemic (H1N1) 2009 virus. In 19 countries, the geographical distribution can be considered widespread; six countries exhibit an increasing trend; and two display very high intensity of respiratory disease activity.
The World Health Organization (WHO) does not recommend any restrictions to travel or the closing of borders due to pandemic (H1N1) 2009.