Six members of staff at Uckfield Leisure Centre have now tested positive for Covid-19.
A spokesperson confirmed the number this morning.
Last week it was revealed that two members of staff tested positive for the virus. Now four more have tested positive.
Freedom Leisure, which runs the centre, says it does not believe the cases are directly linked to usage of its facilities.
The company’s Senior Health and Safety Manager – who has been fully involved in risk assessments and strict Covid-19 policies in place there – has visited to investigate the numbers.
The spokesperson adds: “All staff have been trained and are maintaining cleaning regimes, adhering to social distancing and supporting our customers to do the same. We are confident that the Leisure Centre provides a COVID secure environment.”