"Our data demonstrates that while asthma outcomes were improved for those who tested negative for SARS-COV-2, asthmatic children who were definitively diagnosed with Covid-19 have worse asthma control in the first six months after infection," said Dr. Christine C. Chou from the Hospital's Department of Paediatrics.

On the other hand, children who tested negative for Covid virus had improved asthma control for the next six months, meaning fewer emergency department visits and hospitalisations for asthma, and less asthma treatment, the study showed.

Previous studies hypothesised that there was an overall improvement in asthma control during the last two years of pandemic. Respiratory viral infections are major triggers of asthma exacerbations, including coronaviruses. It was therefore unexpected that asthmatic children have not experienced increased exacerbations during the Covid-19 pandemic SARS-CoV-2 virus.

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