The Thane Municipal Corporation (TMC) has started issuing notices to those city-based hospitals, private doctors and pharmacists who have failed to provide information about TB patients being treated or served by them, a civic medical officer said on Thursday.

The civic body's medical officer of Health (MOH) Dr Raju Murudkar said it has been observed that the hospitals and doctors treating TB patients and also the medical shops selling medicines to them were not providing information about such patients despite instructions to them.