SINGAPORE, Aug. 21 -- A staff member at MindChamps PreSchool (East Coast) has been clinically diagnosed with active tuberculosis (TB), prompting screenings at two preschools, according to Singapore's CNA.

This case involves a household contact of a previously reported TB patient, CNA reported.

The Communicable Diseases Agency (CDA) said early results showed no evidence of TB transmission within both MindChamps and MapleBear Toa Payoh, and no children have tested positive to date.

The staff member was diagnosed on Aug 18 and, at this stage, is asymptomatic, on medical leave, and will be non-infectious after two weeks of treatment.

As a precaution, CDA has contacted both preschools to identify staff and students with close and prolonged...