Epidemiological aspects of influenza A related to climatic conditions during and after a pandemic period in the city of Salvador, northeastern Brazil
Mem. Inst. Oswaldo Cruz
;
109(2): 229-235, abr. 2014. tab, graf
Artículo
en Inglés
| LILACS
| ID: lil-705817
ABSTRACT
During the influenza pandemic of 2009, the A(H1N1)pdm09, A/H3N2 seasonal and influenza B viruses were observed to be co-circulating with other respiratory viruses. To observe the epidemiological pattern of the influenza virus between May 2009-August 2011, 467 nasopharyngeal aspirates were collected from children less than five years of age in the city of Salvador. In addition, data on weather conditions were obtained. Indirect immunofluorescence, real-time transcription reverse polymerase chain reaction (RT-PCR), and sequencing assays were performed for influenza virus detection. Of all 467 samples, 34 (7%) specimens were positive for influenza A and of these, viral characterisation identified Flu A/H3N2 in 25/34 (74%) and A(H1N1)pdm09 in 9/34 (26%). Influenza B accounted for a small proportion (0.8%) and the other respiratory viruses for 27.2% (127/467). No deaths were registered and no pattern of seasonality or expected climatic conditions could be established. These observations are important for predicting the evolution of epidemics and in implementing future anti-pandemic measures.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Virus de la Influenza B
/
Estaciones del Año
/
Tiempo (Meteorología)
/
Gripe Humana
/
Subtipo H1N1 del Virus de la Influenza A
Límite:
Child, preschool
/
Humanos
/
Lactante
/
Recién Nacido
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Mem. Inst. Oswaldo Cruz
Asunto de la revista:
Medicina Tropical
/
Parasitología
Año:
2014
Tipo del documento:
Artículo
/
Documento de proyecto
País de afiliación:
Brasil
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