1. Before no Influenza A(H1N1) cases are found in the local place:
(1) Keep the compartment or cabin clean.
Don't eat in the compartment/cabin.
Don't spit freely.
Don't litter. Put the garbage into the dustbin on the stop/platform/lobby.
A vomiting bag should be used if it is necessary to vomit.
(2) Maintain the good personal hygiene.
Avoid touching the eyes, mouth and nose with the hands.
Cover the mouth and nose when sneezing or sniveling.
If you have the symptoms for the respiratory infection or pyrexia, you should seek the medical service as soon as possible.
(3) Wear masks
People riding on the public vehicles should use the masks, particularly:
The people who have the symptoms for the respiratory infection or pyrexia; and
The people who need to take care of the patients with the respiratory infection or pyrexia.
2. After Influenza A(H1N1) cases are found in the local place:
In addition to the aforesaid measures, people shall:
(1) Wear masks
The people riding the public vehicles shall put on the masks, in particular when it is crowded during the busy periods, and when staying in the enclosed compartment/cabin;
The people with the symptoms for the mask infection or pyrexia and the people with the close contact  with the Influenza A(H1N1) patients shall wear the masks for consecutive ten days after the last contact.
The people with the social contact with the Influenza A(H1N1) patients also can wear the masks.
(2) Keep the compartment or cabin well ventilated
If the vehicle/vessel window can be opened, the vehicle/vessel window should be properly opened to ensure the air ventilation in the compartment or cabin.
(3) Seek assistance
If you suspect yourself of catching Influenza A(H1N1);
Please use an ambulance to go to hospital;
If you are in the station or dock, or already in the compartment/cabin, you may ask the driver or the working staff of the traffic service provider to help you call an ambulance or marine police to go to hospital.
Note : Close contact means the person has taken care of, lived with, or directly contacted the secretions or body fluids of, the patient.
Note : Social contact means common interviews, that is, the contact other than those mentioned in Note .