Reporte CDC sobre la Evolución de la Epidemia Influenza en México

Extractos del reporte


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Numero de confirmados (N = 97) y probables (N = 260)* casos de influenza A (H1N1) virus (S-OIV) infection, por fecha de inicio de enfermedad-- Mexico, Marzo 15--Abril 26, 2009


In March and early April 2009, Mexico experienced outbreaks of respiratory illness and increased reports of patients with influenza-like illness (ILI) in several areas of the country. On April 12, the General Directorate of Epidemiology (DGE) reported an outbreak of ILI in a small community in the state of Veracruz to the Pan American Health Organization (PAHO) in accordance with International Health Regulations. On April 17, a case of atypical pneumonia in Oaxaca State prompted enhanced surveillance throughout Mexico. On April 23, several cases of severe respiratory illness laboratory confirmed as swine-origin influenza A (H1N1) virus (S-OIV) infection were communicated to the PAHO. Sequence analysis revealed that the patients were infected with the same S-OIV strain detected in two children residing in California (1). This report describes the initial and ongoing investigation of the S-OIV outbreak in Mexico.

TABLE 1. Eventos Claves en detección y respuesta ....Mexico, Abril 12--30, 2009
April 12 Respiratory illness outbreak reported to the Pan American Health Organization (PAHO).
April 17 A case of atypical pneumonia leads to an alert to enhance surveillance.
April 17--22 Field investigation of respiratory illness undertaken.
April 23 Public Health Agency Canada confirms cases of S-OIV infection.
April 23 Cluster of S-OIV illness reported to PAHO.
April 24 Health authorities implement public health measures for all airport passengers and vaccination of health-care workers withseasonal influenza vaccine.
April 25 National decree allows for house isolation of persons with suspected cases.
April 26 National laboratory capacity to diagnose S-OIV infection established in Mexico.
April 27 School closure is mandated throughout the country.
April 30 Status: 97 laboratory-confirmed cases of S-OIV infection in Mexico