Severe Pneumonia Associated with Pandemic (H1N1) 2009 Outbreak, San Luis Potosí, México

DOI: 10.3201/eid1601.090941
Suggested citation for this article: Gómez-Gómez A, Magaña-Aquino M, García-Sepúlveda CA, Ochoa-Pérez UR, Falcón-Escobedo R, Comas-García A, et al. Severe pneumonia associated with pandemic (H1N1) 2009 outbreak, San Luis Potosí, Mexico. Emerg Infect Dis. 2010 Jan; [Epub ahead of print]
Severe Pneumonia Associated with Pandemic (H1N1) 2009 Outbreak, San Luis Potosí, Mexico

Alejandro Gómez-Gómez, Martin Magaña-Aquino, Christian A. García-Sepúlveda, Uciel R. Ochoa-Pérez, Reynaldo Falcón-Escobedo, Andreu Comas-García, Saray Aranda-Romo, Hugo I. Contreras-Treviño, Paulina V. Jiménez-Rico, Mario A. Banda-Barbosa, Félix Dominguez-Paulin, J. Mario Bernal-Blanco, Luis F. Pérez-González, and Daniel E. Noyola

Author affiliations: Hospital Central “Dr. Ignacio Morones Prieto,” San Luis Potosí, Mexico (A. Gómez-Gómez, M. Magaña-Aquino, R. Falcón-Escobedo, J.M. Bernal-Blanco, L.F. Pérez-González); Universidad Autónoma de San Luis Potosí, San Luis Potosí (A. Gómez-Gómez, M. Magaña-Aquino, C.A. García-Sepúlveda, U.R. Ochoa-Pérez, R. Falcón-Escobedo, A. Comas-García, S. Aranda-Romo, H.I. Contreras-Treviño, P.V. Jiménez-Rico, M.A. Banda-Barbosa, F. Dominguez-Paulin, J. M. Bernal-Blanco, L.F. Pérez-González, D.E. Noyola); and Servicios de Salud del Estado de San Luis Potosí, San Luis Potosí (U.R. Ochoa-Pérez).

We describe the clinical characteristics and outcomes of adults hospitalized with pneumonia during the pandemic (H1N1) 2009 outbreak. Patients admitted to a general hospital in San Luis Potosí, Mexico, from April 10 through May 11, 2009, suspected to have influenza virus–associated pneumonia were evaluated. We identified 50 patients with suspected influenza pneumonia; the presence of influenza virus was confirmed in 18: 11 with pandemic (H1N1) 2009 virus, 5 with unsubtypeable influenza A virus, 1 with seasonal influenza A (H3N2) virus, and 1 in whom assay results for seasonal and pandemic (H1N1) 2009 viruses were positive. Eighteen patients were treated in the intensive care unit, and 10 died. During the pandemic (H1N1) 2009 outbreak, severe pneumonia developed in young adults who had no identifiable risk factors; early diagnosis and treatment of influenza virus infections may have a determinant role in outcome.
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