1. Office for National Statistics. Deaths registered weekly in England and Wales, provisional: week ending 23 December 2022. Jan 2023. https://www.ons.gov.uk/releases/deathsregisteredweeklyinenglandandwalesprovisionalweekending23december2022.
2. NHS England. Urgent and emergency care daily situation reports 2022-23. https://www.england.nhs.uk/statistics/statistical-work-areas/uec-sitrep/urgent-and-emergency-care-daily-situation-reports-2022-23.
3. UK Health Security Agency. Group A streptococcal infections: activity during the 2022 to 2023 season. Dec 2022. https://www.gov.uk/government/publications/group-a-streptococcal-infections-activity-during-the-2022-to-2023-season.