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Deteção de rinovírus em amostras de ar interior e exterior
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Abstract(s)
O rinovírus é um vírus de RNA de cadeia simples que pertence à família dos picornavírus e que tem três espécies. Está associado a mais de metade das constipações anuais e está normalmente associado a infeções ligeiras e autolimitadas. Em idosos e pessoas com doenças respiratórias crónicas poderá causar situações de risco de vida. As vias de transmissão deste vírus ainda são alvo de alguma discussão, mas pensa-se que será por transmissão direta (contacto dador-recetor) e transmissão indireta (aerossóis e
superfícies). Neste estudo, pretendeu-se detetar a presença do vírus em amostras de ar interior e exterior e também a presença do mesmo em zaragatoas nasais de voluntários saudáveis. Relacionou-se também os resultados com as condições atmosféricas (meteorológicas e qualidade do ar). Não foram detetadas amostras de ar interior positivas.
Contudo, foi detetada a presença de rinovírus em amostras de ar exterior com um pico no outono. As amostras nasais mostraram também um pico na frequência e concentração do vírus na primavera e no outono. A radiação solar, o SO2 atmosférico e os níveis de benzeno mostraram influenciar a presença de rinovírus nas amostras.
Rhinovirus is a single stranded RNA virus that belongs to the picornavirus family and has three species. It is associated with more than half of common cold cases and is usually associated with mild, self-limiting infections. In the elderly and people with chronic respiratory diseases, rhinovirus infection can ocasionally presente itself as a lifethreatening condition. Rhinovirus transmission is still subject of debate, but it is thought to involve direct transmission (donor-receptor contact) and indirect transmission (aerosols and surfaces). The aim of this study was to detect the presence of the virus in indoor and outdoor air samples as well as its presence in nasal swabs of healthy volunteers. The results were also related to atmospheric conditions (weather and air quality). No positive indoor samples were detected. However, positive samples were detected in the outdoor samples with a peak in the fall. Nasal samples also showed a peak in virus frequency and concentration in spring and autumn. Sun radiation, atmospheric SO2 and benzene levels have all been shown to influence the presence of rhinovirus in the samples.
Rhinovirus is a single stranded RNA virus that belongs to the picornavirus family and has three species. It is associated with more than half of common cold cases and is usually associated with mild, self-limiting infections. In the elderly and people with chronic respiratory diseases, rhinovirus infection can ocasionally presente itself as a lifethreatening condition. Rhinovirus transmission is still subject of debate, but it is thought to involve direct transmission (donor-receptor contact) and indirect transmission (aerosols and surfaces). The aim of this study was to detect the presence of the virus in indoor and outdoor air samples as well as its presence in nasal swabs of healthy volunteers. The results were also related to atmospheric conditions (weather and air quality). No positive indoor samples were detected. However, positive samples were detected in the outdoor samples with a peak in the fall. Nasal samples also showed a peak in virus frequency and concentration in spring and autumn. Sun radiation, atmospheric SO2 and benzene levels have all been shown to influence the presence of rhinovirus in the samples.
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Keywords
Rinovírus Via de transmissão Presença de rinovírus no ar Rhinovirus Routes of transmission Airborne rhinovirus