Important points about the fourth vaccination shot (2nd booster)
1. Only eligible residents can get the 4th shot
Only residents who have received their third vaccination shot at least five months ago can get the fourth vaccination shot.
- Residents 60 years old and older
- Residents 18-59 with underlying medical conditions
- Health care professionals and personnel at long term care facilities, etc.
2. Vaccination vouchers will be sent to residents who have received their third shot
Vaccination vouchers will be sent to residents 18 and older who have received their third shot. Be sure to check whether you are eligible for the fourth shot. Also confirm that the date you received your third shot is correctly shown on the vaccination voucher.
3. Do not throw away your vaccination voucher
It may be important to have the vaccination voucher at a future date even if you are not currently eligible for the fourth vaccination, so please keep it in a safe place.
Overview of the fourth vaccination shots (booster)
If it has been 5 months or more since you received the third shot (booster), and
1. You are 60 or older, or
2. You are between 18 and 59 AND
- You have an underlying medical condition, or
- A doctor has determined for any other reason that you would be at risk of severe illness if infected by the new coronavirus.
- Are a health care professional or personnel at a long term care facility, etc.
- If you are currently undergoing treatment for an underlying condition or if you have a doctor you may consult about the vaccine before getting it, please consult the facility or doctor about your eligibility for the second booster.
- Note that you will be asked to indicate your underlying medical condition when making the reservation for the shot and before receiving it.
- Note that individuals in this category are not obliged to make a sincere effort to get vaccinated that is normally required under the Immunization Act.
Underlying medical conditions
Individuals who see a doctor regularly or are hospitalized for following diseases or conditions:
1. Chronic respiratory disease
2. Chronic heart disease (including hypertension)
3. Chronic kidney disease
4. Chronic liver disease (cirrhosis, etc.)
5. Diabetes treated with insulin or oral medication or that occurs with other diseases
6. Blood disorders (excluding iron-deficiency anemia)
7. Diseases that weaken immune functions (including malignant tumors for which treatment or palliative care is provided)
8. Treatments that weaken immune functions (steroids, etc.)
9. Neurological or neuromuscular disorders with immune system abnormalities
10. Decreased bodily functions caused by neurological or neuromuscular disorders (respiratory impairment, etc.)
11. Chromosomal disorders
12. Severe physical and mental impairment (severe physical disability with severe intellectual impairment)
13. Sleep apnea syndrome
14. Severe mental illness (if hospitalized for treatment, possessing a Health and Welfare Handbook for the Mentally Disabled, or undergoing treatment to support independence [outpatient psychiatric care] for a condition that is “severe and continuous”) or intellectual disabilities (if possessing a Handbook for Raising Handicapped Children)
*Individuals with a severe mental illness carrying a Health and Welfare Handbook, as well as individuals with an intellectual disability carrying a health handbook, are still considered eligible as someone with an underlying condition even if they are not regularly seeing a doctor, receiving regular treatment, or are hospitalized.
Individuals who meet the criteria for obesity (BMI of 30 or higher)
Standards for a BMI of 30 or higher: height of 170 cm and weight of 87 kg or more, height of 160 cm and weight of 77 kg or more
[Calculation: (Weight in kg) ÷ (Height in meters)2 ]
Individuals at risk of severe illness if infected, as indicated by a doctor
Elderly residents, people who are pregnant, people who smoke, and people who are sedentary (physically inactive) in their daily life are considered to be at greater risk of severe illness if infected. Residents who fit the criteria above with doctors they can consult beforehand are asked to do so; residents without one are asked to consult the doctor during the pre-vaccination screening at the venue.
May 25, 2022 through September 30, 2022 (planned)
Vaccine used and interval between boosters
|Vaccine used||Interval after 3rd shot|
|Pfizer||5 months or more|
|Takeda-Moderna (half the dosage of the 1st and 2nd shots)||5 months or more|
*If your first and second shots or third (booster) shot was Takeda-Moderna, Pfizer, AstraZeneca, or Takeda (Novavax), you may receive either the Pfizer or Takeda-Moderna vaccine for your fourth shot.
Vaccinations will be administered using public funds, and are free of charge for everyone.
*However, there is a possibility you will have to pay for doctor fees if you visit a clinic before or after the vaccination.
Potential side effects after getting the shot (side reactions)
The COVID-19 vaccines have been seen to sometimes cause side effects after they are administered, such as pain around where you were given the shot, headaches, fatigue, muscle and joint pain, chills, diarrhea, or fever. Recipients will recover within a few days of receiving the vaccine.
Call center for inquiries about side effects (Kanagawa-ken COVID-19 Side Reactions Consultation Call Center)
045-285-0719（open 24h hours）
*Guidance in languages other than Japanese also available
Side effects that continually persist after getting the shot or for specific issues that warrant informed medical consultation.
(Introductions to individual health care facilities are not provided. If you wish to be examined, consult your regular physician or the facility where you got the vaccine.)
Consent for receiving the vaccination:
COVID-19 vaccinations are provided under the condition that the individual receiving the vaccination is doing so of their own volition with an adequate understanding of the vaccine’s efficacy and side effects. Vaccinations will not be administered without the individual’s consent.
Distribution method and schedule for vaccine vouchers
- Individual notices (including the vaccination voucher) will be sent out to all residents 18 years and older who have received the first booster shot. Please confirm whether you are eligible for the second booster or not.
- Eligibility may be expanded in the future, so please keep the individual notice (including the vaccination voucher) in a safe place, even if you are not eligible yet.
Where (vaccination venues)
A reservation is required to get the vaccine. (Residents who have received a vaccine voucher can make reservations.) Have the vaccination voucher ready when making your reservation.
Reservations by PHONE (call center)
City of Yokohama COVID-19 Vaccination Call Center
|Hours||9 am to 7 pm (including weekends and holidays)|
|Same-day reservations||Only mass vaccination venues will accept same-day reservations if there is an available time slot that day.|
|Language guidance||8 languages: Japanese, English, Mandarin, Korean, Vietnamese, Nepalese, Spanish, Portuguese|
|Precautions||*Take care to dial the correct number. Please also be sure to double-check the number when redialing.|
*The call center will close even once all reservation slots are filled, even if it is before 7:00 pm.
|Dedicated cancellation number||0120-045-154 (9 am to 7 pm)|
Reservations by FAX (for residents with hearing loss)
People with hearing loss who cannot make a reservation on a computer or smartphone may make reservations for mass vaccination venues or vaccinations at health care facilities via fax.
Reservations online (reservation website) (in Japanese)
Yokohama dedicated reservation website
|Same-day reservations||[Mass vaccination venues]|
Same-day reservations taken if there is an available time slot that day.
Certain health care facilities will take same-day reservations if there is an available time slot that day.
|User manual||How to use the dedicated reservation website (third and fourth shots)（PDF：2,468KB） (in Japanese)|
|Compatible browsers||Internet Explorer is not supported. Please access the reservation site on newer browser such as Microsoft Edge or Google Chrome.|
|Cancellations||If you are no longer able to go to your reservation, make sure to cancel it at least a day in advance in order to avoid wasting a valuable dose of the vaccine.|
How to cancel a reservation（PDF：930KB） (in Japanese)
What to bring on the day you get the vaccine
Please bring the following items to your vaccination.
|Vaccine voucher||Bring the whole paper with the sticker still attached.|
|Vaccination questionnaire||Fill it out beforehand and bring it with you.|
|Personal ID||Individual Number Card, driver’s license, health insurance card, passport, etc.|
|Medication record book (if you have one)||To be checked during the pre-vaccination screening.|
- Wear clothing to the venue that allows you to easily bare your upper arm.
- Take your temperature, and if it is clear that you have a fever or are otherwise feeling unwell, you are requested to forego the vaccination and cancel your reservation.
Multilingual information about the COVID-19 vaccine
The pre-vaccination questionnaire, guidance, informational leaflet have been translated into 17 languages* on the Ministry of Health, Labour and Welfare website.
*English, Arabic, Simplified Chinese, Traditional Chinese, French, Indonesian, Khmer, Korean, Mongolian, Myanmar, Nepali, Portuguese, Russian, Spanish, Tagalog, Thai, Vietnamese
Ministry of Health, Labour and Welfare website（外部サイト）
Inquiries (Yokohama COVID-19 Vaccine Call Center)
For general questions about COVID-19 vaccinations, venues, etc.
Call center details
|Hours||9 am to 7 pm (including weekends and holidays)|
|Languages||Japanese, English, Chinese, Korean, Vietnamese, Nepali, Spanish, Portuguese|
|Precautions||*Many residents have dialed the wrong number. Take care to dial the correct number and double-check the number when redialing.|
*This call center does not take reservations.
|FAX number||050-3588-7191 (for residents with hearing loss)|