For the control of infectious diseases in Singapore, the IDA provides for the notification of specified infectious diseases. It empowers the Director of Medical Services to order medical examination and treatment of any person who is or suspected to be a case, carrier or contact of an infectious disease, post-mortem examination of any person who has died while being or suspected of being a case, carrier or contact of an infectious disease, epidemiological surveys and investigations into outbreaks to be carried out. The Act also permits the Director of Medical Services to order the treatment of premises or vessels, closure of food establishments if the establishment is suspected to be the source of or responsible for the transmission of an infectious disease. The Director can prohibit meetings and public entertainment if such gatherings are likely to increase the spread of any infectious disease.