the initial steps. They certified in writing the master of a supposedly infected ship, and detained the vessel provisionally for not more than twelve hours, giving notice meanwhile to the port sanitary authority. The medical officer of the port boarded the ship and examined every person in it. Every person found infected was taken to a hospital and quarantined under the orders of the medical officer, and the vessel remained under his orders. Every person suspected could be detained on board for 48 hours or removed to the hospital for a similar period. All others were free to land upon giving the addresses of their destinations to be sent to the respective local authorities, so that the dispersed passengers and crew could be kept individually under observation for a few days. The ship was then disinfected, dead bodies buried at sea, infected clothing, bedding, etc., destroyed or disinfected, and bilge-water and water-ballast pumped out at a suitable distance before the ship entered a dock or basin. Mail was subject to no detention. A stricken ship within 3 miles of the shore had to fly a yellow and black flag at the main mast from sunrise to sunset. United States In the United States, authority to quarantine people with infectious diseases is split between the state and federal governments. States (and tribal governments recognised by the federal government) have primary authority to quarantine people within their boundaries. Federal jurisdiction only applies to people moving across state or national borders, or people on federal property. Federal rules Communicable diseases for which apprehension, detention, or conditional release of people are authorised must be specified in Executive Orders of the President. As of 2014, these include Executive Orders 13295 13375, and 13674; the latest executive order specifies the following infectious diseases: cholera, diphtheria, infectious tuberculosis, plague, smallpox, yellow fever, viral haemorrhagic fevers (Lassa, Marburg, Ebola, Crimean-Congo, South American, and others not yet isolated or named), severe acute respiratory syndromes (SARS), and influenza from a novel or re-emergent source. The Department of Health and Human Services is responsible for quarantine decisions, specifically the Centers for Disease Control and Prevention's Division of Global Migration and Quarantine. As of 21 March 2017, Centers for Disease Control and Prevention (CDC) regulations specify: All commercial passenger flights must report deaths or illnesses to the CDC. Individuals must apply for a travel permit if they are under a Federal quarantine,