All medical practitioners, including clinical directors of diagnostic laboratories, are required to notify the Medical Officer of Health(MOH)/Director of Public Health (DPH) of certain diseases. This information is used to investigate cases thus preventing spread of infection and further cases.
The list of diseases (and their respective causative pathogens) that are notifiable is contained in the Infectious Diseases Regulations 1981 and subsequent amendments. The most recent amendment to the Regulations is the Infectious Diseases (Amendment) Regulations 2020 (S.I. No. 53 of 2020).