Table 2. Positive tests and total number of SARS-CoV-2 tests
performed in each screening arm categorised according to week since
starting the healthcare worker testing programme (6th April-24th May 2020).
In our original study between 6th to
24th April 2020, we described in detail two clusters
of HCW infections.1 From 25th April
2020 to 24th May 2020, we detected one additional
cluster on a general medical ward with a separated area for patients
with proven COVID-19 and another for those without. This was identified
through targeted screening of the ward over a 24-hour period from
4th to 5th May 2020, in response to
four staff testing positive through the HCW symptomatic arm of
the screening programme from 27th to
30th April 2020. Reactive screening of a further 40
staff from the same ward identified a further three positive
asymptomatic HCWs. In addition, a further two HCWs tested positive in an
asymptomatic screen of 30 individuals from a closely related clinical
area (designated for non-COVID patients) on 6th May
2020.