Investigação molecular de vírus em crianças com infecção do trato respiratório e crianças asmáticas em Goiânia-Goiás

• Autor(a) principal: Castro, Ítalo de Araújo
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/0013000002p9f
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/5052
• topic: Vírus respiratórios; Asma; Multiplex PCR; Respiratory viruses; Asthma; Multiplex PCR; CIENCIAS BIOLOGICAS::PARASITOLOGIA

Acute respiratory infection (ARI) is a major cause of morbity and mortality worldwide, particularly among children, and most of these infections are caused by viruses. Respiratory viral infections can cause symptoms ranging cough, coryza, sneezing, fever and airflow obstruction. Furthermore, the infection poses as an important trigger of asthma exacerbation, frequent clinical condition in children, and its prevalence has been rising in the last years. There are few epidemiologic studies analyzing the relationship between ARIs and asthma in Brazil. Based on this background, the aim of the study was investigate the occurrence of viral respiratory infections in pediatric patients with and without asthma in Goiânia – Goiás. Between august, 2012 and august, 2013 225 nasal aspirates and/or nasal swab samples were obtained from children with four to 14 years old. The samples were screened by Multiplex Nested-PCR for detection of 16 common respiratory viruses. From 225 samples, 42 had at least one virus detected. Samples from four different patients had more than one virus detected. The viral detection rate in ARI patients (25%), exacerbated asthma (16.3%) and stable asthma (14.8%) showed no significant difference. The most frequent viruses detected were Rhinovirus (28.6%), FLUA (11.9%), Adenovirus (11.9%), HBoV (11.9%) and RSVA (9.5%). The monthly detection rate was higher during the rainy season, period marked by great rainfall and high relative air humidity. Among the positive samples, RSV were detected during the great rainfall months and high air humidity, while the FLU and HBoV were detected during the winter months, period with low air humidity in the Mid-West region. The seasonal profile from the other viruses was unclear. The obtained results reinforces the importance of the viral pathogens in the pediatric population. Although the viral detection rate was not statistically significant, the presence of these pathogens in children is an important matter for consideration, especially to delineate control and prevention measures concerning ARIs and its impact on preexistent asthma. Hence, this study is the first of the kind in the region, and the data provided tried to fill the knowledge gaps about seasonality and circulation of these pathogens.