Table 3. Proportion of community acquired, care home-associated COVID-19 infections tested at Cambridge University Hospitals.

The proportion of community onset, care home-associated COVID-19 infections tested at Cambridge University Hospitals (CUH) peaked in mid to late April. Total cases shows the total number of new COVID-19 cases diagnosed at CUH that week. ‘Community acquired’ was defined as first positive test <48 hr from admission and no healthcare contact within the previous 14 days. Not showing precise values if number of patients is less than or equal to five to preserve patient anonymity.

Week	Total weekly COVID-19 cases	Community acquired, care home-associated (%)
09-Mar	12	0 (0%)
16-Mar	24	0 (0%)
23-Mar	75	<5 (<7%)
30-Mar	96	<5 (<5.2%)
06-Apr	99	14 (14.1%)
13-Apr	49	14 (28.6%)
20-Apr	41	10 (24.4%)
27-Apr	41	9 (22.0%)
04-May	27	6 (22.2%)