The Port Health Authority is responsible for the enforcement of infectious disease controls. Infectious diseases can be spread by the crew of aircraft and ships and by passengers and other visitors. Infectious diseases can spread from person to person and if not identified and controlled quickly, could infect large numbers of people.
Other infectious disease control work relates to the investigation of suspected and confirmed cases of food poisoning resulting from the consumption of food contaminated with bacteria such as Salmonella, E. coli and Staphylococcus aureus, or food contaminated by banned food additives and toxic chemicals. Here the controls are related to food premises, including ships and aircraft.
Masters of ships and Captains of aircraft must notify the Port Health Authority of any suspected infectious disease or death on board other than by an accident. The presence of animals or captive birds and any illness or death in those animals or birds, must also be reported.