There has been a fourfold increase in cases of a potentially severe RSV virus across greater Brisbane in the last 4 months. 74% of the cases were recorded among children under 10, an increase of 45% from last year. The virus can cause inflammation and mucus to build up quickly in children’s airways making it difficult for them to breathe. The surge in cases has prompted QLD health to urge people to continue to be cautious and anyone experiencing symptoms to get tested and isolate.