Spatiotemporal trends of cases of pandemic influenza A(H1N1)pdm09 in Argentina, 2009-2012

• Autores: Leveau, Carlos M.; Uez, Osvaldo; Vacchino, Marta
• Año de publicación: 2015
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: Revista Do Instituto De Medicina Tropical De Sao Paulo 2015;57(2):133-8.
• Materia: Subtipo H1N1 del Virus de la Influenza A
• Institución: Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"

Fil: Leveau, Carlos M. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Epidemiología; Argentina.
Fil: Uez, Osvaldo. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Epidemiología; Argentina.
Fil: Vacchino, Marta. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Epidemiología; Argentina.
The aim of this paper was to analyze the spatiotemporal variations of cases of influenza A(H1N1)pdm09 in Argentina. A space-time permutation scan statistic was performed to test the non-randomness in the interaction between space and time in reported influenza A(H1N1)pdm09 cases. In 2009, two clusters were recorded in the east of Buenos Aires Province (May and June) and in the central and northern part of Argentina (July and August). Between 2011 and 2012, clusters near areas bordering other countries were registered. Within the clusters, in 2009, the high notification rates were first observed in the school-age population and then extended to the older population (15-59 years). From 2011 onwards, higher rates of reported cases of influenza A(H1N1)pdm09 occurred in children under five years in center of the country. Two stages of transmission of influenza A(H1N1)pdm09 can be characterized. The first stage had high rates of notification and a possible interaction with individuals from other countries in the major cities of Argentina (pattern of hierarchy), and the second stage had an increased interaction in some border areas without a clear pattern of hierarchy. These results suggest the need for greater coordination in the Southern Cone countries, in order to implement joint prevention and vaccination policies.