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COVID-19 preventive measures (for individual residents)

Last updated date:2020/12/1

COVID-19 is now categorized as a Class 5 infectious disease.
From May 8, 2023
Implementation of infection control measures is left to the judgment of individuals and of businesses.
The following measures are still effective.

COVID-19 preventive measures

Keep rooms ventilated

Ventilating rooms allows indoor air to travel outside and vice versa, which can carry away air droplets that may contain viruses or lower the concentration.
Droplets can remain airborne for a long time in closed rooms, so be sure to open windows and ventilate rooms often.

When opening windows
1. In rooms with 2 or more windows, open windows on the diagonal opposite side if possible.
2. If there is only 1 window, create an airflow by opening the door to the room and using an electric fan or other device facing the window.
3. If there are no windows, open the door to the room and place an electric fan or other device to create an airflow to the outside of the room.
Also, using the vent fan in the kitchen (the ventilator that moves the most air in your home) is also effective for creating ventilation.
Note about ventilating during the winter
1. In the morning or when returning home: when heating the room using an air conditioner or other device, open a window to ventilate the room while keeping it on.
2. About when to ventilate: if you feel especially cold, open a window for up to five minutes to ventilate two times every one hour.
Compared to summer, there is a big difference between the indoor and outdoor temperature, so opening the window allows air to flow in and out easily. Also, because the wind tends to be stronger in the winter, even a short length of time is enough to ventilate the needed amount of air.

Wash your hands frequently

Washing hands is a basic measure to prevent against infectious disease, including COVID-19.
Wash your hands with soap frequently, such as when you return home, before and after preparing food, as well as before eating.


Correct way to wash your hands
1. After wetting your hands under running water, apply soap, and rub your palms together well.
2. Rub the back of your hands.
3. Rub your fingertips and nails on your palm.
4. Wash between your fingers.
5. Wash your thumbs by making a circle with your palm and fingers to wrap around your thumb, and making a twisting motion.
6. Wash your wrists.
7. After cleaning with soap, thoroughly rinse your hands, then wipe them dry with a clean towel or paper towel.
If you cannot wash your hands, disinfect your hands and fingers with rubbing alcohol.

Wearing a mask

In the following situations, wear a mask to prevent infecting those at high risk of becoming seriously ill.

  • When visiting a doctor, medical institution, or elderly care facility
  • When taking a crowded train or bus, such as during rush hour

May be asked to wear a mask at the discretion of a business operator.

If you are symptomatic

If you are symptomatic, avoid crowds and wear a mask when going out.
Visiting medical institutions(医療機関のかかり方)

in advance

Consider having COVID-19 antigen test kits, fever medication, and other daily medications in advance.

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