Estimated reading time: 4 Minutes
This blog post explains how and when data are published regarding COVID-19 cases and deaths in Wales. The World Health Organization (WHO) defines COVID-19 as the infectious disease caused by the coronavirus. We’ve included summary charts which will be updated weekly and may be revised as the data published by Public Health Wales (PHW) change. Data for the most recent two or three days have been omitted as they are likely to change substantially as more cases, tests and deaths are reported.
COVID-19 statistics are published by PHW every day on its dashboard. PHW publishes data on the number of testing episodes, confirmed cases and deaths. It cautions that all the data published on its dashboard are provisional and will be subject to daily revision.
Testing episodes and confirmed cases
PHW explains that individuals may be tested more than once for COVID-19. In its testing data PHW uses 6 week periods where if an individual is tested more than once within a 6 week period they are only counted once. If any test results are positive then this result is published as a confirmed case. Testing data are published by local authority of residence and are also broken down by sex and age for Wales. The testing episodes include confirmed cases in hospitals and elsewhere. Read our blog post on coronavirus: testing to find out more.
Note that on 30 September, PHW stated on Twitter that approximately 2,000 test results were not included due to data flow issues outside of their control and that this will be corrected in future reports when the issue has been resolved.
PHW also state on their dashboard that there has been “a rise in the number of cases tested outside of Wales” and that “most of these cases are young adults that are now in other parts of the UK, likely to be students”.
Cumulative number of confirmed COVID-19 cases since 01 September per 100,000 resident population
The graphs below show the daily number of new confirmed cases of COVID-19 by Local Health Board. A seven-day rolling average smooths the data to show the broader trend. The shaded area beneath each curve approximately corresponds to the cumulative number of cases. These are shown to the right of each graph for the most recent available data.
Daily confirmed cases of COVID-19 by date and Local Health Board
Number of confirmed cases of COVID-19 in Wales by age and sex
New testing episodes in Wales
Deaths by date and LHB
PHW publishes the number of deaths suspected to be caused by COVID-19 in people who have tested positive, these are shown by date of death.
Daily deaths in Wales
These figures only include deaths occurring in individuals who were laboratory confirmed with COVID-19. The majority of deaths reported here occurred in hospital settings, however a proportion occurred in care home settings. The figures do not include individuals who may have died from COVID-19 but who were not confirmed by laboratory testing. The true number of COVID-19 deaths will be higher.
The majority of care home deaths will not be counted in the PHW data and PHW states that its statistics will differ from the Office for National Statistics (ONS) suspected and confirmed COVID-19 deaths in England and Wales.
PHW also publishes deaths by Local Health Board (LHB) of residence and figures for some LHBs are suppressed if the number of deaths is 5 or lower to prevent individual deaths from being identified.
Other sources of data
The Office for National Statistics (ONS) publishes suspected and confirmed COVID-19 deaths in England and Wales in a weekly publication – Deaths registered weekly in England and Wales, provisional. This publication uses data made available after the death registration process and is therefore lagged by over a week. The latest data are analysed in our blog post Coronavirus: registered deaths.
The Welsh Government publishes a range of data and analyses on the effect of coronavirus on society in Wales. This page includes data on businesses and the economy, attendance at local authority education settings, NHS activity and capacity, shielding, testing and housing.
Public Health England publishes its data in a dashboard and the Scottish Government publishes daily statistics on its website with National Records of Scotland publishing a weekly update. The Department of Health in Northern Ireland publishes daily statistics on its dashboard. The World Health Organization (WHO) also have a dashboard showing confirmed cases and deaths around the world.
We’ve published a range of material on the coronavirus pandemic, including a post setting out the help and guidance available for people in Wales and a timeline of Welsh and UK governments’ response.
You can see all our coronavirus-related publications by clicking here. All are updated regularly.