WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT

This report is based on data collected up to 28 December 2025 (week 52 of 2025)  

Highlights

  • From 30 December 2024 to 28 December 2025, from 7484 samples tested, we detected 661 (8.8%) cases of influenza, 769 (10.3%) cases of respiratory syncytial virus (RSV), 305 (4.1%) cases of SARS-CoV-2 and 61 (1.1%) cases of pertussis.
  • The influenza season started in week 13 (24 March 2025), peaked in week 20 (12 May 2025), and ended in week 30 (21 July 2025). Detection rates remained within the low threshold throughout the season. Influenza activity began increasing again from week 36 (1 September 2025), with detection rates in inpatient pneumonia surveillance in the low threshold from week 40 (29 September 2025) to 42 (13 October 2025) and again from week 45 (3 November 2025) to week 49 (1 December 2025) due to increases in A(H1N1)pdm09 and A(H3N2) cases. Of the 19 A(H1N1)pdm09 cases detected from week 36 (1 September 2025) to week 52 (22 December 2025), 17 (89%) were assigned to subclade D.3.1 and 2 (11%) to D.31.1. For A(H3N2), 34 cases (89%) were characterised as belonging to subclade K (previously J.2.4.1).
  • An increase in SARS-CoV-2 cases was observed from week 29 (week starting 14 July 2025) with detection rates in all 3 surveillance programmes oscillating around the low threshold. A more substantial increase was observed in the outpatient ILI surveillance in private general practitioner practices from week 45 (3 November 2025), peaking in week 47 (17 November 2025) in the moderate threshold and again dropping below the low threshold in week 50 (8 December 2025). Among cases with sequencing data available from week 29 (14 July 2025) to week 52 (22 December 2025), 120/149 (81%) were identified as the XFG recombinant variant.
  • The RSV season started in week 11 (week starting 10 March 2025), peaked in week 16 (week starting 15 April 2025) at the moderate level, and ended in week 31 (week starting 28 July 2025).
  • Since week 37 (starting 8 September 2025), routine testing for human adenovirus, human metapneumovirus, human parainfluenza virus, and human rhinovirus has been introduced for sentinel surveillance samples. Human rhinovirus was the most frequently detected pathogen during this period (515/1961; 26%).

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 52 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 27 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 26 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 26 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 25 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 24 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 23 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 22 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 21 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 20 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 19 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 18 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 17 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 16 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 15 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 14 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 13 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 12 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 11 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 10 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 09 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 08 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 07 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 06 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 05 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 04 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 03 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 02 (2025)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 26 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 25 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 24 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 23 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 22 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 21 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 20 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 19 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 18 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 17 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 16 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 15 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 14 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 13 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 12 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 11 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 10 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 09 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 08 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 07 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 06 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 05 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 04 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 03 (2024)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 32 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 31 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 30 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 29 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 28 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 27 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 26 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 25 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 24 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 23 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 22 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 21 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 20 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 19 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 18 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 17 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 16 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 15 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 14 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 12 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 11 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 10 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 9 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 8 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 7 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 6 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 5 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 4 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 3 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 2 (2023)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 52 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 50 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 49 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 48 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 47 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 46 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 45 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 44 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 43 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 42 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 41 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 40 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 39 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 38 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 37 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 36 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 35 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 34 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 33 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 31 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 30 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 29 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 28 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 27 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 26 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 25 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 25 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 24 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 23 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 22 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 21 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 20 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 19 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 18 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 17 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 16 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 15 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 14 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 13 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 12 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 11 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 10 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 9 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 8 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 7 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 6 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 5 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 4 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 3 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 2 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 2 (2022)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 52 (2021)

Monthly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 49 (2021)

Monthly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 48 (2021)

Monthly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 47 (2021)

Monthly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 46 (2021)

Monthly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 45 (2021)

Monthly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 44 (2021)

Monthly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 43 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 42 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 41 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 40 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 38 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 36 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 35 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 34 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 33 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 32 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 31 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 30 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 29 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 28 (2021)

WEEKLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 27 (2021)

MONTHLY RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 26 (2021)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 50 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 49 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 48 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 47 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 46 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 45 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 44 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 43 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 42 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 41 (2020)

MONTHly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 40 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 39 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 38 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 37 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 36 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 35 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 34 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 33 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 32 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 31 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 30 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 29 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 28 (2020)

weekly RESPIRATORY PATHOGENS SURVEILLANCE REPORT WEEK 27 (2020)