evidence: How covid, flu, and other seasonal vaccine programmes are changing [...] As summer fades this September, staff at a general practice in Hampshire, England, will activate a computer program—as they do every year. It will scour the medical records of patients and send those who are eligible for a seasonal flu or covid-19 vaccine a text message, inviting them to make an appointment. [...] But the concept of winter or "seasonal" vaccine programmes is changing. The arrival of covid-19 vaccination in 2021 brought the possibility that these medicines could become part of a recurring drive to immunise people on a large scale every autumn, as has been the case with flu vaccines in many countries for decades (the first UK seasonal flu jab for over 65s was introduced in the year 2000). This year, the UK and US will also offer vaccines against respiratory syncytial virus (RSV). And with H5N1 influenza causing concern,2 vaccines against it might become part of seasonal immunisation programmes one day. A spring covid-19 booster was also offered to especially vulnerable people.