Pandemic (H1N1) 2009 regional update 16 Oct 2009
I- Evolution of the pandemic
In Canada, Mexico, and the United States, trends in acute respiratory disease continued to increase and the intensity of such diseases remained high this week. Canada has experienced increased national rate of ILI consultation, above what is expected for this time of year since EW 37.
The geographic spread of influenza continued to be widespread. Based on information available from Mexico's web page 1, as of the 13th of October, the greatest numbers of cumulative laboratory-confirmed cases were seen in the Federal District, Chiapas, Yucatan, Nuevo Leon, Jalisco, San Luis Potosi, and Tamaulipas. When comparing against cases reported in the previous week (8 October), the greatest increases were observed in Nayarit, Durango, Nuevo Leon, Sonora, Morelos, and Guerrero.
Few Caribbean countries reported qualitative indicators for this week, but those who did reported increasing or unchanged trends in acute respiratory disease. Reporting CAREC countries2, maintain a low level of respiratory disease activity, but there have been reports of outbreaks in school settings.
Cuba continued to report high intensity of acute respiratory disease. Overall, impact on health care services due to acute respiratory disease was moderate.
Most countries providing an update this week report widespread geographic spread of influenza except for El Salvador which continues to report regional spread. Trends of acute respiratory disease were reported as decreasing or unchanged, with the exception of El Salvador, which reported a new increasing trend. The intensity of acute respiratory disease was mostly low/moderate, again with the exception of El Salvador, which again reported high intensity. Impact on heath care services due to acute respiratory disease was low or moderate.
his sub-region still notes moderate pandemic influenza activity compared to southern temperate regions, albeit in decreasing trends. Colombia was the only country to report an increasing trend of acute respiratory disease. The impact on heath services of acute respiratory disease was low or moderate.
The Southern Cone of South America is experiencing a decrease in intensity of respiratory disease, except in Paraguay, who newly reported a high intensity. For the remaining countries in this sub-region the situation reported remains largely unchanged since last EW
- The intensity of acute respiratory diseases in North America was high in Canada, Mexico, and the U.S.
- In Central America had a low or moderate intensity of acute respiratory disease; with the exception of El Salvador, which had a high intensity of acute respiratory disease and an increasing trend of acute respiratory disease
- Caribbean countries reported increasing or unchanged trends in acute respiratory disease, with outbreaks in schools.
- Most of South America had a decreasing trend and low or moderate intensity of acute respiratory disease; Colombia, however, had an increasing trend in acute respiratory disease
- 81.95% of subtyped influenza A viruses were pandemic (H1N1) 2009
- 133 new confirmed deaths in 10 countries (3539 cumulative deaths)