Complacency over the flu jab risks overwhelming the NHS as data reveals the scale of the challenge in expanding the vaccination programme. Last month, the Government announced plans to double the number of people who receive the jab even though the take-up rate among people in vulnerable groups eligible to have it for free has declined. The UK has an ambition to vaccinate 55% of people in vulnerable groups, such as those with multiple sclerosis, diabetes, or chronic asthma. WHO has previously said countries should vaccinate 75% of people in ‘vulnerable’ categories. Getting the flu vaccine is vital now more than ever with the possible co-mingling of Covid and flu.