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Entry title:

Measles

Last updated on Wednesday, 3 September 2025 at 09:49am

Measles is a viral infectious disease. This page provides information about measles cases in England.

Cases are confirmed through either local or reference laboratory testing.

Numbers shown here are provisional and subject to change as:

  • more suspected cases undergo confirmatory testing
  • some locally tested cases are discarded after obtaining further epidemiological information or undergoing confirmatory testing at the reference laboratory

Measles case numbers started to increase in April 2025 with outbreaks particularly affecting London and the North West regions. However since mid-July activity has stabilised. We update measles data every month. The next update will be on Thursday 25 September at 9.30am.

Headlines

Cases

Since January 2025
Up to and including week beginning 18 Aug 2025
742

Cases

In the past 4 weeks
Up to and including week beginning 18 Aug 2025
40

Since 1 January 2025, there have been 742 laboratory confirmed measles cases reported in England.

50% (373 of 742) of these cases have been in London, 17% (124 of 742) in the North West and 9% (67 of 742) in the East of England. 93 out of 152 upper tier local authorities (UTLAs) have reported at least one confirmed case with symptom onset since January 2025, with the highest numbers reported in Hackney (94 of 742, 13%), Bristol (47 of 742, 6%) and Salford (39 of 742, 5%).

In 2024 there were 2,911 laboratory confirmed measles cases in England, the highest number of cases recorded annually, since 2012. Data for 2023 and 2024 and historical data are available.

Percent cases in England by age group (in years), since January 2025

Cases under 1 year of age are assigned to the 00-01 age group.

Up to and including week beginning 18 Aug 2025

ChartThere are 7 plots on this chart. The horizontal X-axis is labelled 'age'. Whilst the vertical Y-axis is labelled 'metric'. This is plot number 1 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesAgePercent' for the England area, along with the age banding of '00-01' for the gender group of all. This plot shows `00 - 01` along the X-axis. And `13.5000` along the Y-axis. This is plot number 2 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesAgePercent' for the England area, along with the age banding of '01-04' for the gender group of all. This plot shows `01 - 04` along the X-axis. And `33.7000` along the Y-axis. This is plot number 3 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesAgePercent' for the England area, along with the age banding of '05-10' for the gender group of all. This plot shows `05 - 10` along the X-axis. And `23.0000` along the Y-axis. This is plot number 4 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesAgePercent' for the England area, along with the age banding of '11-14' for the gender group of all. This plot shows `11 - 14` along the X-axis. And `5.3000` along the Y-axis. This is plot number 5 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesAgePercent' for the England area, along with the age banding of '15-24' for the gender group of all. This plot shows `15 - 24` along the X-axis. And `8.9000` along the Y-axis. This is plot number 6 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesAgePercent' for the England area, along with the age banding of '25-34' for the gender group of all. This plot shows `25 - 34` along the X-axis. And `9.2000` along the Y-axis. This is plot number 7 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesAgePercent' for the England area, along with the age banding of '35+' for the gender group of all. This plot shows `35+` along the X-axis. And `6.5000` along the Y-axis. There is no reporting delay period being tracked for the data on this chart. - Refer to tabular data.
Tabular data

Percent cases in England by age group (in years), since January 2025 data for cases under 1 year of age are assigned to the 00-01 age group.

Up to and including 18 August 2025

Age group (years)Percent of cases
00 - 0113.50
01 - 0433.70
05 - 1023.00
11 - 145.30
15 - 248.90
25 - 349.20
35+6.50
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Percent cases in England by UKHSA Region, since January 2025

Up to and including week beginning 18 Aug 2025

ChartThere are 9 plots on this chart. The horizontal X-axis is labelled 'geography'. Whilst the vertical Y-axis is labelled 'metric'. This is plot number 1 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the East Midlands area, along with the age banding of 'all' for the gender group of all. This plot shows `East Midlands` along the X-axis. And `2.4000` along the Y-axis. This is plot number 2 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the East of England area, along with the age banding of 'all' for the gender group of all. This plot shows `East of England` along the X-axis. And `9.0000` along the Y-axis. This is plot number 3 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the London area, along with the age banding of 'all' for the gender group of all. This plot shows `London` along the X-axis. And `50.3000` along the Y-axis. This is plot number 4 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the North East area, along with the age banding of 'all' for the gender group of all. This plot shows `North East` along the X-axis. And `0.8000` along the Y-axis. This is plot number 5 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the North West area, along with the age banding of 'all' for the gender group of all. This plot shows `North West` along the X-axis. And `16.7000` along the Y-axis. This is plot number 6 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the South East area, along with the age banding of 'all' for the gender group of all. This plot shows `South East` along the X-axis. And `3.2000` along the Y-axis. This is plot number 7 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the South West area, along with the age banding of 'all' for the gender group of all. This plot shows `South West` along the X-axis. And `7.8000` along the Y-axis. This is plot number 8 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the West Midlands area, along with the age banding of 'all' for the gender group of all. This plot shows `West Midlands` along the X-axis. And `4.6000` along the Y-axis. This is plot number 9 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesRegionPercent' for the Yorkshire and Humber area, along with the age banding of 'all' for the gender group of all. This plot shows `Yorkshire and Humber` along the X-axis. And `5.1000` along the Y-axis. There is no reporting delay period being tracked for the data on this chart. - Refer to tabular data.
Tabular data

Percent cases in England by UKHSA Region, since January 2025 data for

Up to and including 18 August 2025

UKHSA regionPercent of cases
East Midlands2.40
East of England9.00
London50.30
North East0.80
North West16.70
South East3.20
South West7.80
West Midlands4.60
Yorkshire and Humber5.10
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Number of cases in England by upper tier local authority, since January 2025

The upper tier local authorities with the highest number of cumulative measles cases in the reporting period are included in this chart.

Up to and including week beginning 18 Aug 2025

ChartThere are 21 plots on this chart. The horizontal X-axis is labelled 'geography'. Whilst the vertical Y-axis is labelled 'metric'. This is plot number 1 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Hackney and City of London area, along with the age banding of 'all' for the gender group of all. This plot shows `Hackney and City of London` along the X-axis. And `94.0000` along the Y-axis. This is plot number 2 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Bristol, City of area, along with the age banding of 'all' for the gender group of all. This plot shows `Bristol, City of` along the X-axis. And `47.0000` along the Y-axis. This is plot number 3 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Salford area, along with the age banding of 'all' for the gender group of all. This plot shows `Salford` along the X-axis. And `39.0000` along the Y-axis. This is plot number 4 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Leeds area, along with the age banding of 'all' for the gender group of all. This plot shows `Leeds` along the X-axis. And `29.0000` along the Y-axis. This is plot number 5 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Birmingham area, along with the age banding of 'all' for the gender group of all. This plot shows `Birmingham` along the X-axis. And `26.0000` along the Y-axis. This is plot number 6 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Haringey area, along with the age banding of 'all' for the gender group of all. This plot shows `Haringey` along the X-axis. And `26.0000` along the Y-axis. This is plot number 7 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Newham area, along with the age banding of 'all' for the gender group of all. This plot shows `Newham` along the X-axis. And `25.0000` along the Y-axis. This is plot number 8 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Croydon area, along with the age banding of 'all' for the gender group of all. This plot shows `Croydon` along the X-axis. And `24.0000` along the Y-axis. This is plot number 9 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Hertfordshire area, along with the age banding of 'all' for the gender group of all. This plot shows `Hertfordshire` along the X-axis. And `23.0000` along the Y-axis. This is plot number 10 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Camden area, along with the age banding of 'all' for the gender group of all. This plot shows `Camden` along the X-axis. And `22.0000` along the Y-axis. This is plot number 11 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Essex area, along with the age banding of 'all' for the gender group of all. This plot shows `Essex` along the X-axis. And `22.0000` along the Y-axis. This is plot number 12 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Knowsley area, along with the age banding of 'all' for the gender group of all. This plot shows `Knowsley` along the X-axis. And `20.0000` along the Y-axis. This is plot number 13 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Lewisham area, along with the age banding of 'all' for the gender group of all. This plot shows `Lewisham` along the X-axis. And `20.0000` along the Y-axis. This is plot number 14 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Harrow area, along with the age banding of 'all' for the gender group of all. This plot shows `Harrow` along the X-axis. And `18.0000` along the Y-axis. This is plot number 15 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Waltham Forest area, along with the age banding of 'all' for the gender group of all. This plot shows `Waltham Forest` along the X-axis. And `18.0000` along the Y-axis. This is plot number 16 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Islington area, along with the age banding of 'all' for the gender group of all. This plot shows `Islington` along the X-axis. And `15.0000` along the Y-axis. This is plot number 17 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Barnet area, along with the age banding of 'all' for the gender group of all. This plot shows `Barnet` along the X-axis. And `14.0000` along the Y-axis. This is plot number 18 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Cheshire West and Chester area, along with the age banding of 'all' for the gender group of all. This plot shows `Cheshire West and Chester` along the X-axis. And `10.0000` along the Y-axis. This is plot number 19 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Liverpool area, along with the age banding of 'all' for the gender group of all. This plot shows `Liverpool` along the X-axis. And `10.0000` along the Y-axis. This is plot number 20 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Southwark area, along with the age banding of 'all' for the gender group of all. This plot shows `Southwark` along the X-axis. And `10.0000` along the Y-axis. This is plot number 21 on this chart. This is a dark blue solid bar plot. This plot shows data for Measles. Specifically the metric 'measles_headline_cumulativeCasesIncident' for the Wandsworth area, along with the age banding of 'all' for the gender group of all. This plot shows `Wandsworth` along the X-axis. And `10.0000` along the Y-axis. There is no reporting delay period being tracked for the data on this chart. - Refer to tabular data.
Tabular data

Number of cases in England by upper tier local authority, since January 2025 data for the upper tier local authorities with the highest number of cumulative measles cases in the reporting period are included in this chart.

Up to and including 18 August 2025

Upper Tier Local AuthorityNumber of cases
Hackney and City of London94.00
Bristol, City of47.00
Salford39.00
Leeds29.00
Birmingham26.00
Haringey26.00
Newham25.00
Croydon24.00
Hertfordshire23.00
Camden22.00
Essex22.00
Knowsley20.00
Lewisham20.00
Harrow18.00
Waltham Forest18.00
Islington15.00
Barnet14.00
Cheshire West and Chester10.00
Liverpool10.00
Southwark10.00
Wandsworth10.00
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Trends

Cases by week of symptom onset

Laboratory confirmed cases of measles by week of onset of rash or symptoms reported, London and England from 1 January 2025. The data reporting lag has greatest impact on the most recent 4 weeks. Reported figures for this period are likely to underestimate activity. These data points are within the "reporting delay" period on the chart. This chart is different to the measles "cases reported" chart on the landing page. Data affected by the reporting delay is not included in the chart on the landing page.

Up to and including week beginning 18 Aug 2025

ChartThere are 2 plots on this chart. The horizontal X-axis is labelled 'date'. Whilst the vertical Y-axis is labelled 'metric'. This is plot number 1 on this chart. This is a dark blue solid line plot. The plot has a label of 'England'. This plot shows data for Measles. Specifically the metric 'measles_cases_casesByOnsetWeek' for the England area, along with the age banding of 'all' for the gender group of all. This plot shows data from 30 December 2024 to 18 August 2025. It rose from 15.0 on 30 December 2024 to 17.0 on 03 February 2025. It fell from 17.0 on 10 February 2025 to 16.0 on 17 March 2025. It rose from 14.0 on 24 March 2025 to 26.0 on 28 April 2025. It rose from 27.0 on 05 May 2025 to 30.0 on 09 June 2025. It rose from 24.0 on 16 June 2025 to 38.0 on 14 July 2025. And finally. It fell from 16.0 on 21 July 2025 to 1.0 on 18 August 2025. This is plot number 2 on this chart. This is a turquoise solid line plot. The plot has a label of 'London'. This plot shows data for Measles. Specifically the metric 'measles_cases_casesByOnsetWeek' for the London area, along with the age banding of 'all' for the gender group of all. This plot shows data from 30 December 2024 to 18 August 2025. It rose from 3.0 on 30 December 2024 to 5.0 on 03 February 2025. It rose from 3.0 on 10 February 2025 to 10.0 on 17 March 2025. It rose from 6.0 on 24 March 2025 to 14.0 on 28 April 2025. It rose from 13.0 on 05 May 2025 to 16.0 on 09 June 2025. It rose from 19.0 on 16 June 2025 to 30.0 on 14 July 2025. And finally. It fell from 11.0 on 21 July 2025 to 1.0 on 18 August 2025. Data from 28 July 2025 onwards falls under the reporting delay period. This means those figures are still subject to retrospective updates and should therefore not be considered to be final. - Refer to tabular data.
Tabular data

Cases by week of symptom onset data for laboratory confirmed cases of measles by week of onset of rash or symptoms reported, London and England from 1 January 2025.

The data reporting lag has greatest impact on the most recent 4 weeks. Reported figures for this period are likely to underestimate activity. These data points are within the "reporting delay" period on the chart.

This chart is different to the measles "cases reported" chart on the landing page. Data affected by the reporting delay is not included in the chart on the landing page.

Up to and including 18 August 2025

Reporting delay period

Symptom onset dateEnglandLondon
18 Aug 20251.001.00
11 Aug 202512.006.00
4 Aug 20259.006.00
28 Jul 202518.0015.00
21 Jul 202516.0011.00
14 Jul 202538.0030.00
7 Jul 202532.0020.00
30 Jun 202536.0022.00
23 Jun 202530.0017.00
16 Jun 202524.0019.00
9 Jun 202530.0016.00
2 Jun 202532.0021.00
26 May 202534.0018.00
19 May 202532.0019.00
12 May 202524.0011.00
5 May 202527.0013.00
28 Apr 202526.0014.00
21 Apr 202519.0013.00
14 Apr 202532.0018.00
7 Apr 202526.0012.00
31 Mar 202523.009.00
24 Mar 202514.006.00
17 Mar 202516.0010.00
10 Mar 202512.007.00
3 Mar 202517.006.00
24 Feb 202518.004.00
17 Feb 202516.005.00
10 Feb 202517.003.00
3 Feb 202517.005.00
27 Jan 202514.002.00
20 Jan 202524.004.00
13 Jan 202522.005.00
6 Jan 202519.002.00
30 Dec 202415.003.00
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