Table 3 Modifications to the Saliva Testing Programme

1. Resolved initial technical hurdles in the registration process and moved towards a more robust yet simple registration process in Phase II to reduce the barriers of registering;

2. Created clear and simple instructions, which were translated into seven languages, to reduce the number of inconclusive saliva test results;

3. Designed smaller labels to stick to the test pots to reduce the number of people placing them incorrectly and increasing the risk of receiving an inconclusive result;

4. Testing team communicated the test’s accuracy and the progress of the programme in a weekly newsletter to schools and through emails to university staff and students;

5. Educational engagement activities were offered to university students to increase their involvement in the programme;

6. Commitment has been made to reduce the amount of plastic and to recycle containers in the next phase of the programme;

7. Post-boxes rather than team members placed at sample drop-off points to reduce possibility of transmission;

8. Increased number of drop-off points in Southampton to reduce the travel time for participants submitting their tests;

9. ‘Toolkit’ created for programme implementers to support preparation and roll-out for the next phase of the programme.