Hong Kong
Under the Prevention and Control of Disease Ordinance (HK Laws. Chap 599), a health officer may seize articles he/she believes to be infectious or contains infectious agents. All travellers, if requested, must submit themselves to a health officer. Failure to do so is against the law and is subject to arrest and prosecution.
The law allows for a health officer who have reasonable grounds to detain, isolate, quarantine anyone or anything believed to be infected and to restrict any articles from leaving a designated quarantine area. He/she may also order the Civil Aviation Department to prohibit the landing or leaving, embarking or disembarking of an aircraft. This power also extends to land, sea or air crossings.
Under the same ordinance, any police officer, health officer, members of the Civil Aid Service or Auxiliary Medical Service can arrest a person who obstructs or escape from detention.
Read more about this topic: Quarantine