Please use this identifier to cite or link to this item: http://www.arca.fiocruz.br/handle/icict/9282
Title: Seasonal patterns of viral and bacterial infections among children hospitalized with community-acquired pneumonia in a tropical region.
Authors: Carvalho, Cristiana Maria Costa Nascimento
Cardoso, Maria Regina Alves
Barral, Aldina Maria Prado
Araújo Neto, César Augusto de
Oliveira, Juliana Rebouças de
Silva, Luciana Sobral da Silveira
Saukkoriipi, Annika
Paldanius, Mika
Vainionpaa, Raija
Leinonen, Maija
Ruuskanen, Olli
Affilliation: Universidade Federal da Bahia. Escola de Medicina Veterinária. Departamento de Pediatria. Salvador, BA, Brasil
São Paulo University. Faculty of Public Health. Epidemiology Department. São Paulo, SP, Brasil
Universidade Federal da Bahia. Escola de Medicina Veterinária. Departamento de Patologia. Salvador, BA, Brasil / Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
Universidade Federal da Bahia. Escola de Medicina Veterinária. Departamento de Diagnóstico de Imagem. Salvador, BA, Brasil
Federal University of Bahia. Professor Hosannah de Oliveira Paediatric Centre. Salvador, BA, Brasil
National Institute for Health and Welfare. Oulu
National Institute for Health and Welfare. Oulu
University of Turku. Virology Department. Turku, Finland
National Institute for Health and Welfare. Oulu
University of Turku. Paediatrics Department. Turku, Finland
Abstract: Community-acquired pneumonia (CAP) is a common cause of morbidity among children. Evidence on seasonality, especially on the frequency of viral and bacterial causative agents is scarce; such information may be useful in an era of changing climate conditions worldwide. To analyze the frequency of distinct infections, meteorological indicators and seasons in children hospitalized for CAP in Salvador, Brazil, nasopharyngeal aspirate and blood were collected from 184 patients aged < 5 y over a 21-month period. Fourteen microbes were investigated and 144 (78%) cases had the aetiology established. Significant differences were found in air temperature between spring and summer (p = 0.02) or winter (p < 0.001), summer and fall (p = 0.007) or winter (p < 0.001), fall and winter (p = 0.002), and on precipitation between spring and fall (p = 0.01). Correlations were found between: overall viral infections and relative humidity (p = 0.006; r = 0.6) or precipitation (p = 0.03; r = 0.5), parainfluenza and precipitation (p = 0.02; r = -0.5), respiratory syncytial virus (RSV) and air temperature (p = 0.048; r = -0.4) or precipitation (p = 0.045; r = 0.4), adenovirus and precipitation (p = 0.02; r = 0.5), pneumococcus and air temperature (p = 0.04; r = -0.4), and Chlamydia trachomatis and relative humidity (p = 0.02; r = -0.5). The frequency of parainfluenza infection was highest during spring (32.1%; p = 0.005) and that of RSV infection was highest in the fall (36.4%; p < 0.001). Correlations at regular strength were found between several microbes and meteorological indicators. Parainfluenza and RSV presented marked seasonal patterns.
DeCS: Bactérias/classificação
Infecções Comunitárias Adquiridas/epidemiologia
Pneumonia Bacteriana/epidemiologia
Vírus/classificação
Bactérias/isolamento & purificação
Sangue/microbiologia
Brasil/epidemiologia
Pré-Escolar
Infecções Comunitárias Adquiridas/microbiologia
Feminino
Humanos
Lactente
Umidade
Recém-Nascido
Masculino
Nasofaringe/microbiologia
Pneumonia Bacteriana/microbiologia
Prevalência
Chuvas
Estações do Ano
Temperatura Ambiente
Clima Tropical
Vírus/isolamento & purificação
Issue Date: 2010
Publisher: Informa Healthcare
Citation: NASCIMENTO-CARVALHO, C. M. C. et al. Seasonal patterns of viral and bacterial infections among children hospitalized with community-acquired pneumonia in a tropical region. Scandinavian Journal of Infectious Diseases, v. 42, n. 11-12, p. 839-844, 2010.
DOI: 10.3109/00365548.2010.498020
ISSN: 1651-1980
Copyright: open access
Appears in Collections:IGM - Artigos de Periódicos

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