Of the 44,508 people transferred to the Test and Trace system in England in the week to 3 March, 88.6% were reached and asked to provide details of recent close contacts, the latest statistics show, APA reports citing BBC.
This is down slightly from 89.1% the previous week.
Some 10.9% of people transferred to the system were not reached, while a further 0.5% did not provide any communication details.
A total of 88.7% of people tested at an in-person site received a test result within 24 hours, the data shows, the highest figure since 8 July.