The proportion of the contacts of positive COVID-19 cases reached by England's test and trace system slipped slightly to 75.1% in the latest week of data, from 78.4% in the previous week, the government said on Thursday.
It said 3,455 people who had tested positive for coronavirus were reached by its tracers and asked to share details of their close contacts in the week to July 22.
(Reporting by Paul Sandle; editing by Sarah Young)
