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Data Provider: Welsh Government Management Information Contact tracing times for eligible positive cases and close contacts

These data havebeen published to provide a weekly summary of contact tracing for coronavirus in Wales. Figures show the percentage of positive cases and close contacts reached within 24 and 48 hours, and from the time positive cases were referred to the contact tracing system, the percentage of all close contacts that were eligible for follow-up reached within 24 and 48 hours. These figures are subject to small revisions from week to week due to cases being flagged as not eligible following further investigation by contact tracing teams.

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Measure2
Group Measure[Filtered]
Measure[Filter]
Week ending[Filter]
[Collapse]Positive casespositive cases that were eligible for follow-up[Collapse]Close contactsclose contacts that were eligible for follow-up[Collapse]Close contacts, from the time positive cases that identified them were referred to the contact tracing systemfrom the time positive cases were referred to the contact tracing system, close contacts that were eligible for follow-up
Click here to sort% reached within 24hrsEligible for follow-up, were reached within 24 hours of referral to the contact tracing system.Click here to sort% within 24hrs of those successfully reachedThis equates to those successfully reached being reached within 24 hoursClick here to sort% reached within 48hrsEligible for follow-up were reached within 48 hours.Click here to sort% within 48hrs of those successfully reachedThis equates to those successfully reached being reached within 48 hoursClick here to sort% reached within 24hrsEligible for follow-up, were reached within 24 hours of referral to the contact tracing system.Click here to sort% within 24hrs of those successfully reachedThis equates to those successfully reached being reached within 24 hoursClick here to sort% reached within 48hrsEligible for follow-up were reached within 48 hours.Click here to sort% within 48hrs of those successfully reachedThis equates to those successfully reached being reached within 48 hoursClick here to sort% reached within 24hrsEligible for follow-up, were reached within 24 hours of referral to the contact tracing system.Click here to sort% within 24hrs of those successfully reachedThis equates to those successfully reached being reached within 24 hoursClick here to sort% reached within 48hrsEligible for follow-up were reached within 48 hours.Click here to sort% within 48hrs of those successfully reachedThis equates to those successfully reached being reached within 48 hours
05 September 202092.095.095.099.079.089.087.097.046.052.072.081.0
12 September 202088.092.093.098.073.084.083.095.042.048.071.081.0
19 September 202085.090.092.098.069.080.078.090.034.039.059.069.0
26 September 202075.082.088.096.059.071.071.085.027.032.051.061.0
03 October 202075.084.085.095.067.077.075.087.033.038.054.062.0
10 October 202062.073.075.089.076.086.084.095.024.027.047.053.0
17 October 202058.074.068.087.075.084.083.093.029.033.052.059.0
24 October 202055.065.072.086.071.081.081.092.029.033.053.061.0
31 October 202038.045.066.077.061.075.072.087.017.020.041.050.0
07 November 202063.070.079.088.061.077.071.089.023.030.043.055.0
14 November 202079.086.089.097.070.086.077.095.040.050.063.077.0
21 November 202080.087.089.096.068.080.079.093.032.038.058.068.0
28 November 202076.082.089.096.064.075.074.087.026.031.050.059.0
05 December 202061.067.085.093.059.074.070.087.019.024.045.056.0
12 December 202037.043.066.078.047.059.065.081.09.011.027.034.0
19 December 202024.029.045.054.055.064.069.080.09.011.024.028.0
26 December 202041.047.064.073.059.071.071.085.017.020.036.043.0
02 January 202169.075.087.094.066.080.075.091.032.038.057.070.0
09 January 202182.088.091.097.073.086.079.093.049.058.070.083.0
16 January 202186.092.091.097.079.091.084.096.056.065.076.087.0
23 January 202187.092.091.097.079.088.084.095.057.063.076.085.0
30 January 202190.094.094.098.081.090.085.094.059.065.075.084.0
06 February 202191.095.095.098.084.091.088.095.054.058.068.074.0
13 February 202192.094.096.099.091.095.094.097.041.043.052.054.0
20 February 202193.095.096.099.086.090.090.095.060.063.076.080.0
27 February 202194.096.097.099.088.093.092.097.066.069.081.086.0
06 March 202193.096.096.098.090.093.093.097.059.061.078.081.0
13 March 202193.095.096.099.088.094.091.098.064.069.081.087.0
20 March 202194.095.097.098.082.085.086.090.055.058.080.084.0
27 March 202194.095.097.099.088.092.092.096.054.056.079.082.0
03 April 202191.093.097.099.087.091.092.096.054.056.079.083.0
10 April 202195.096.098.099.092.094.096.098.064.065.082.084.0
17 April 202194.095.097.098.093.094.097.098.063.064.088.089.0
24 April 202194.096.097.099.088.090.093.095.054.055.071.073.0
01 May 202193.293.997.598.394.995.397.998.354.154.372.773.1
08 May 202193.394.597.098.288.790.294.896.454.855.773.674.9
15 May 202191.194.795.499.287.589.090.992.553.854.772.073.3
22 May 202192.494.995.397.981.382.593.094.461.962.878.980.0
29 May 202189.193.293.597.987.591.092.796.446.348.174.477.4
05 June 202193.196.495.498.887.789.794.296.349.750.774.075.5
12 June 202192.594.396.798.687.390.193.796.758.960.882.084.6
19 June 202185.687.693.495.679.383.288.592.839.341.166.970.0
26 June 202180.383.890.694.673.680.884.392.640.644.568.775.3
03 July 202176.880.788.492.969.174.279.485.238.341.163.968.6
10 July 202178.381.192.695.967.471.580.185.036.638.963.867.8
17 July 202169.775.783.690.764.870.980.588.132.735.857.262.6
24 July 202176.479.288.892.171.375.184.288.734.936.960.163.5
31 July 202188.891.495.297.980.385.290.195.744.146.866.470.5
07 August 202188.391.594.798.180.987.389.096.053.958.378.184.4
14 August 202180.684.391.896.058.568.869.479.234.739.658.166.4
21 August 202156.560.780.186.159.970.073.786.222.126.050.959.7
28 August 202141.850.062.674.951.966.765.984.615.720.338.149.1
04 September 202138.649.658.775.553.672.666.390.015.921.737.250.7
11 September 202126.929.352.957.730.136.459.9(r) The data item has been revised since previously published in StatsWales.72.38.310.028.334.3
18 September 202122.526.147.3(r) The data item has been revised since previously published in StatsWales.54.927.733.559.371.86.5(r) The data item has been revised since previously published in StatsWales.7.925.030.5
25 September 202125.329.448.3(r) The data item has been revised since previously published in StatsWales.56.031.037.960.5(r) The data item has been revised since previously published in StatsWales.73.86.27.625.4(r) The data item has been revised since previously published in StatsWales.31.0
02 October 202126.3(r) The data item has been revised since previously published in StatsWales.29.451.557.734.343.161.076.86.98.728.736.3
09 October 202126.728.856.3(r) The data item has been revised since previously published in StatsWales.60.843.251.368.681.610.8(r) The data item has been revised since previously published in StatsWales.12.836.543.3
16 October 202128.832.1(r) The data item has been revised since previously published in StatsWales.56.462.943.648.375.0(r) The data item has been revised since previously published in StatsWales.83.011.813.1(r) The data item has been revised since previously published in StatsWales.40.144.6
23 October 202125.228.951.0(r) The data item has been revised since previously published in StatsWales.58.544.749.9(r) The data item has been revised since previously published in StatsWales.75.384.010.712.036.941.2
30 October 202132.936.962.470.150.555.780.688.815.116.643.647.9
06 November 202145.349.176.282.656.261.083.690.722.224.255.860.9
13 November 202147.9(r) The data item has been revised since previously published in StatsWales.51.480.986.861.166.283.990.927.5(r) The data item has been revised since previously published in StatsWales.29.863.5(r) The data item has been revised since previously published in StatsWales.69.0
20 November 202154.858.385.490.853.657.876.282.227.129.358.7(r) The data item has been revised since previously published in StatsWales.63.3
27 November 202156.259.585.990.953.157.777.884.627.129.560.766.1
04 December 202152.755.884.189.055.560.280.887.726.629.063.268.8
11 December 202150.753.284.488.656.560.783.990.126.228.263.568.3
18 December 202140.642.973.577.752.456.781.488.121.4(r) The data item has been revised since previously published in StatsWales.23.157.261.9
25 December 202129.733.353.960.547.3(r) The data item has been revised since previously published in StatsWales.53.573.983.621.424.3(r) The data item has been revised since previously published in StatsWales.52.859.9
01 January 202225.628.156.061.435.843.069.0(r) The data item has been revised since previously published in StatsWales.82.916.6(r) The data item has been revised since previously published in StatsWales.19.944.954.1
08 January 202231.435.863.972.855.465.778.1(r) The data item has been revised since previously published in StatsWales.92.624.729.357.668.4
15 January 202241.247.568.478.864.673.783.795.530.234.564.173.3
22 January 202243.147.273.880.958.266.281.692.828.9(r) The data item has been revised since previously published in StatsWales.32.862.871.5
29 January 202241.245.272.179.154.462.779.291.326.0(r) The data item has been revised since previously published in StatsWales.30.059.4(r) The data item has been revised since previously published in StatsWales.68.5
05 February 202242.547.174.682.653.063.477.8(r) The data item has been revised since previously published in StatsWales.93.0(r) The data item has been revised since previously published in StatsWales.23.6(r) The data item has been revised since previously published in StatsWales.28.356.1(r) The data item has been revised since previously published in StatsWales.67.2
12 February 202247.151.181.188.062.0(r) The data item has been revised since previously published in StatsWales.71.482.094.529.033.465.275.1
19 February 202251.555.584.1(r) The data item has been revised since previously published in StatsWales.90.671.579.686.796.535.3(r) The data item has been revised since previously published in StatsWales.39.273.5(r) The data item has been revised since previously published in StatsWales.81.7
26 February 202262.966.887.793.173.381.087.8(r) The data item has been revised since previously published in StatsWales.96.945.5(r) The data item has been revised since previously published in StatsWales.50.578.4(r) The data item has been revised since previously published in StatsWales.87.0
05 March 202252.9(r) The data item has been revised since previously published in StatsWales.55.883.187.767.574.986.195.637.6(r) The data item has been revised since previously published in StatsWales.41.773.281.3
12 March 202239.642.771.777.359.469.080.994.025.729.959.7(r) The data item has been revised since previously published in StatsWales.69.3
19 March 202242.346.968.876.245.764.564.591.122.231.348.0(r) The data item has been revised since previously published in StatsWales.67.7
26 March 202244.250.367.676.8..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
02 April 202244.651.867.8(r) The data item has been revised since previously published in StatsWales.78.6..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
09 April 202248.854.175.583.7..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
16 April 202249.456.174.284.3..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
23 April 2022(r) The data item has been revised since previously published in StatsWales.50.8(r) The data item has been revised since previously published in StatsWales.57.177.286.8..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
30 April 202252.1(r) The data item has been revised since previously published in StatsWales.58.679.2(r) The data item has been revised since previously published in StatsWales.89.1..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
07 May 2022(r) The data item has been revised since previously published in StatsWales.54.7(r) The data item has been revised since previously published in StatsWales.60.580.4(r) The data item has been revised since previously published in StatsWales.88.9..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
14 May 202255.461.182.190.6..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available
21 May 202257.864.983.493.7..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available..|The data item is not available

Metadata

Title

Timeliness measures for contact tracing of eligible positive cases and close contacts

Last update

26 May 2022 26 May 2022

Next update

9 June 2022

Publishing organisation

Welsh Government

Source 1

Digital Health and Care Wales (DHCW)

Contact email

kas.covid19@gov.wales

Designation

Management information

Lowest level of geographical disaggregation

Wales

Geographical coverage

Wales

Languages covered

English and Welsh

Data licensing

You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see http://www.nationalarchives.gov.uk/doc/open-government-licence

General description

For positive cases, the time taken to reach someone is the time between the case being referred to the contact tracing system and the individual being successfully contacted. For close contacts there are two measures. The first is the time from someone being identified as a close contact to when they are successfully contacted. The second measure is the time taken from the index case being referred to the contact tracing system to the close contact being successfully contacted. The latter measure for close contacts excludes a small number that could not be linked back to the positive case that identified them.

In these statistics, weeks are defined as Sundays to Saturdays.
The majority of cases not eligible for follow-up by local contact tracers occur in closed settings such as hospitals, care homes and prisons. Positive cases and close contacts residing outside Wales are also not eligible for follow-up and are referred to the relevant public health agency for onward tracing.

Data prior to 4 September 2021 are those measures as first published. Since the week ending the 11 September 2021 we have been able to provide a calculation of timeliness measures for each positive or close contact which does not alter over time, this day may revise due to positive cases and close contacts being flagged as not eligible following further investigation by contact tracing teams.


Data collection and calculation

The data in this release is management information collected as part of the contact tracing process. The data has not been collected for official statistics purposes, meaning it has not undergone the same level of quality assurance as official statistics and may be subject to future revisions.

Frequency of publication

Weekly

Data reference periods

September 2020 onwards

Statistical quality

Data prior to 4 September 2021 are those measures as first published. Since the week ending the 11 September 2021 we have been able to provide a calculation of timeliness measures for each positive or close contact which does not alter over time, this day may revise due to positive cases and close contacts being flagged as not eligible following further investigation by contact tracing teams.

In these statistics, weeks are defined as Sundays to Saturdays.

The majority of cases not eligible for follow-up by local contact tracers occur in closed settings such as hospitals, care homes and prisons. Positive cases and close contacts residing outside Wales are also not eligible for follow-up and are referred to the relevant public health agency for onward tracing.

The date and time that a positive case or close contact was successfully contacted is taken to be the earliest of a number of events captured in the system. These include:
• successful phone call record (including initial phone call from contact tracers to invite cases and contacts to complete the e-form)
• completion of the contact interview
• first daily check-up
• close contacts or other exposures being entered into the contact tracing system (for positive cases only)
• case marked as ‘resolved’

These events all indicate that a contact tracer has successfully been in touch with the individual. The range of events is necessary because phone call records do not exist for all positive cases and close contacts. This may arise, for example, where multiple cases live in the same household and the information is captured through a single phone call, rather than one for each individual.

Keywords

NHS, COVID-19, Coronavirus, Contact tracing