This week

There’s been a steep increase in the number of people hospitalised with flu, says Public Health England. In the last week of December, 114 people ended up in intensive care, with 421 admitted to general wards. NHS bosses had issued warnings of Aussie flu.

Interval training after a long period with no exercise may not be good for you. While bursts of high and low-impact exercise burn calories and improve cardiovascular fitness, it could put your knees at risk. Middle-aged people are most in danger of injury, according to orthopaedic surgeon Ian Mcdermott.

Scientists says reovirus therapy, which engages defence systems to attack brain tumours, may help people with incurable brain cancer.