The number of people in hospital in England with flu is at a record level for this time of year, with health officials warning of a "worst-case scenario". ITV News' Science Editor takes us through why flu is so bad this year and whether there's cause for concern. • Subscribe to ITV News on YouTube: • Get breaking news and more stories at Follow ITV News on TikTok @itvnews?lang=en Follow ITV News on Instagram: Follow ITV News on Facebook: Follow ITV News on X: