Question to the Department of Health and Social Care:

To ask His Majesty's Government, further to the reply by Baroness Merron on 16 December 2025 (HL Deb col 661), what estimate they have made of RSV-related hospitalisations among infants under the age of one this season, and how this compares with the 2024/25 season.

The United Kingdom maternal immunisation programme to protect infants started in September 2024 and is based on advice from the Joint Committee on Vaccination and Immunisation (JCVI).

The information requested is not available, however respiratory syncytial virus (RSV) hospital admission rates in those under five years of age are reported in Severe Acute Respiratory Infection Watch surveillance weekly reports.

Further surveillance data and a programme impact assessment will be included in the annual surveillance report on RSV, due to be published in summer 2026.