Covid-19 Latest Information
Updated: September 16, 2022
For those who have booked an additional (fourth) vaccination by September 30 (Friday)
For the additional (fourth) vaccination, the vaccine used will be switched from the conventional vaccine to the Omicron strain vaccine after September 28 (Wednesday).
[Those who have made a reservation for vaccination by September 27th (Tuesday)]
If you wish to receive the Omicron strain vaccine, please change your reservation to a date after September 28th (Wednesday).
To change the reservation frame, please visit the Chiba City Vaccination Reservation Site from 8:30 on Friday, September 23 .(Link to external site)(Open in new window)Or we accept at the Chiba City Corona Vaccination Call Center .
* If you have a “family quota” for individual vaccinations, which is managed directly by each medical institution, please contact the medical institution.
[Those who have made a reservation for vaccination after September 28 (Wednesday)]
You will be inoculated with the Omicron strain vaccine. Please keep this in mind when coming to the venue.
- In Chiba City, vaccination against the Omicron strain will start on September 28 (Wednesday) . First of all, those who are eligible for the current additional (4th ) vaccination and who have not received the additional (4th) vaccination are eligible.
- Reservations for the individual Omicron vaccine “ general category ” and the additional (fourth) vaccination at the group vaccination venue will start at 8:30 on September 23 (Friday) .
- For the additional (3rd) vaccination for those aged 5 to 11 years old, for the time being, reservations for individual vaccination ” general frame ” and group vaccination at the Chiba Chuo Community Center are accepted only by telephone .
- At the mass vaccination venues of Ikoasu Chijodai and Soga Community Center , there are dates and times when additional vaccinations (3rd and 4th doses) can be taken without reservation until September 27 (Tuesday) .
- The group vaccination venue at AEON MALL Makuhari Shintoshin moved to the AEON Lounge on the 2nd floor of the Grand Mall from September .
* The contents posted on the city homepage may be reviewed at any time.
Vaccination Record System (VRS)(Link to external site)(Open in new window)We use data recorded and aggregated in
Vaccination records may be registered on the VRS at a later date than on the day of vaccination, so the number of past vaccination dates may also increase with a delay.
As of September 1, 2022
(unit: number of people vaccinated, vaccination rate: %)
|Division||All ages【1】||Vaccination target person |
|denominator of coverage||total population||Number of people to be vaccinated|
|First time||Number of people vaccinated||803,091||791,542|
|Second time||Number of people vaccinated||798,737||788,036|
|Third time||Number of people vaccinated||644,055||644,055|
|4th||Number of people vaccinated||228,383||228,383|
|Division||Elderly ||child |
|denominator of coverage||elderly population||child population|
|First time||Number of people vaccinated||248,012||11,549|
|Second time||Number of people vaccinated||247,024||10,701|
|Third time||Number of people vaccinated||234,327||–|
|4th||Number of people vaccinated||197,138||–|
* All numbers are the number of people vaccinated, including medical workers.
* The population is based on the basic resident register population by age group (by municipality) as of January 1, 2022.
*The vaccination rate in  is based on the total population of Chiba City, which is 976,328 people.
* The vaccination rate of  is 888,777 people aged 12 and over who are eligible for vaccination for the 1st and 2nd doses, the number of people aged 12 and over who received the 2nd dose for the 3rd dose, and the 3rd dose for the 4th dose. The denominator is the number of people aged 18 and over who participated in
*The denominator of the vaccination rate in  is 256,051 people aged 65 and over in Chiba City for the 1st, 2nd and 3rd doses, and 308,537 people aged 60 and over in Chiba City for the 4th dose.
*The vaccination rate in  is based on the denominator of 54,575 people aged 5 to 11 in Chiba City.
(Reference) Vaccination rate by age group
As of August 28, 2020
(unit population/number of people vaccinated: people, vaccination rate: %)
|era||population||First time||Second time|
|Number of people vaccinated||vaccination rate||Number of people vaccinated||vaccination rate|
|5 to 11 years old||54,575||11,542||21.1||10,531||19.3|
|12 to 19 years old||71,535||55,393||77.4||54,888||76.7|
|20 to 29 years old||105,362||89,128||84.6||88,470||84.0|
|30-39 years old||109,972||91,129||82.9||90,704||82.5|
|40-49 years old||152,154||123,840||81.4||123,397||81.1|
|50-59 years old||141,127||134,521||95.3||134,212||95.1|
|60-64 years old||51,201||48,775||95.3||48,682||95.1|
|65 years of age or older||254,513||247,909||97.4||246,927||97.0|
|Number of people vaccinated||vaccination rate||Number of people vaccinated||vaccination rate|
|5 to 11 years old||54,575||–||–||–||–|
|12 to 19 years old||71,535||30,904||43.2||90||0.1|
|20 to 29 years old||105,362||57,596||54.7||2,630||2.5|
|30-39 years old||109,972||63,613||57.8||3,916||3.6|
|40-49 years old||152,154||95,411||62.7||7,435||4.9|
|50-59 years old||141,127||115,927||82.1||13,881||9.8|
|60-64 years old||51,201||45,182||88.2||20,082||39.2|
|65 years of age or older||254,513||234,140||92.0||167,899||66.0|
*Data that has been incorporated into VRS (including medical professionals, etc.) as of the date of publication.
*Since those whose age is unknown in the VRS registration are excluded, the total number of vaccinated people and the number of vaccinated people of all ages in “Vaccination status” do not match.
* The population is based on the population by age group (by municipality) from the Basic Resident Register as of January 1, 2021.
* Because the age is based on the system at the time of data acquisition, the number of people vaccinated may change at a later date due to the addition of age.
* Data for those who had a resident card in Chiba City at the time of vaccination. Those who moved out of the city after being vaccinated are not excluded.
* The number of people vaccinated for the 4th dose in the age group “12 to 19 years old” is the number of people aged 18 and over.
Effects and side effects of vaccines
|Please check the information of public institutions!The city, the Ministry of Health, Labor and Welfare, and the prime minister’s official residence are disseminating information on new corona vaccinations on a daily basis.|
The media is full of various information about inoculation. In particular, on SNS, the sender is unknown, and there is information that is not based on scientific grounds or reliable sources, so be careful.Detailed information on the efficacy and safety of vaccines can be found on the Ministry of Health, Labor and Welfare website .(Link to external site)(Open in new window)Please confirm.
It has been reported that it is effective in preventing the onset of symptoms and in preventing aggravation.
Initial (1st and 2nd) inoculation
The new coronavirus vaccine administered in Japan is highly effective in preventing the onset of new coronavirus infections, and it has also been confirmed to be effective in preventing infection and aggravation. Although it is possible that the infection prevention effect and the onset prevention effect may gradually decrease over time, it has been reported that the severity prevention effect remains relatively high.
Additional (3rd) vaccination
It has been suggested that while delta strains are effective in preventing the onset of the disease, their effectiveness in preventing infection and in preventing aggravation in the elderly gradually declines over time. . On the other hand, it has been reported in clinical trials and various epidemiological studies that an additional (third) vaccination is effective in enhancing the reduced infection prevention effect and the severity prevention effect.
It is suggested that the preventive effect of the initial (1st and 2nd) vaccination against the Omicron strain is lower than that against the Delta strain, but recovers with the additional (3rd) vaccination. The hospitalization prevention effect is also reduced to a certain extent compared to the delta strain, but it is more maintained than the onset prevention effect, and it has been reported that an additional (3rd) vaccination will recover.
Additional (4th) vaccination
While there are reports that the effect of preventing infection lasted only for a short period of time, there are reports that the effect of preventing aggravation did not decline even after 6 weeks and was maintained, suggesting the effect of preventing death.
Vaccination for children (5 to 11 years old)
Currently, the vaccine available for children (5 to 11 years old) is the Pfizer vaccine. Pfizer’s vaccine has been confirmed to increase neutralizing antibody titers and prevent the onset of delta strains, etc., even in children.
Although the evidence for Omicron strain in children is not necessarily sufficient, we will promptly inform you as soon as new findings are presented by the government.
|vaccination is not compulsoryThose who are to be vaccinated with the new coronavirus vaccine should understand both the effectiveness of vaccination in preventing infectious diseases and the risk of side effects, and be vaccinated voluntarily . Inoculations will not be administered without the consent of the person receiving the vaccine (in principle, in the case of those under the age of 16, the guardian (parental authority or guardian)).|
If you are currently undergoing treatment for some illness, or if you are concerned about your physical condition, please consult with your family doctor before deciding whether or not to get vaccinated.In addition, there are those who do not wish to be vaccinated, and those who cannot be vaccinated for various reasons, such as constitution and illness.
Please do not force your workplace or people around you to be vaccinated, and do not discriminate against those who have not been vaccinated.Consultation counter for workplace bullying and harassment(Link to external site)(Open in new window)Contact point for human rights consultation(Link to external site)(Open in new window)
Adverse reactions such as swelling and pain at the injection site, fever, and rare anaphylaxis have been reported.
Side effects of the new coronavirus vaccine include swelling at the vaccination site, pain, fatigue, headache, muscle pain, chills, and fever. These are due to immune reactions caused by inoculation and are expected side reactions. Compared to influenza vaccines, the frequency of side effects is higher, and it is said that the frequency of side effects is higher with the second dose than with the first. increase.
Aside from this, a strong side effect called anaphylaxis may be seen in one in several hundred thousand people, and refers to hives, nausea, diarrhea, and difficulty breathing that occur within about 30 minutes after vaccination. In particular, people with drug or food allergies may develop anaphylaxis after vaccination, so rest for 30 minutes after vaccination before going home.
In addition, the Ministry of Health, Labor and Welfare is requesting and collecting reports from medical institutions regarding suspected adverse reactions that may occur after vaccination. For reports on suspected adverse reactions to the new coronavirus vaccine, please refer to the Ministry of Health, Labor and Welfare website(Link to external site)(Open in new window)Please confirm.
If you have any symptoms that you are concerned about after vaccination, or if you have any unusual changes in your physical condition, please contact your doctor immediately. If you have any concerns, please contact the Chiba Prefecture Novel Coronavirus Vaccine Adverse Reactions Consultation Desk ( 03-6412-9326 ) or the Ministry of Health, Labor and Welfare Novel Coronavirus Vaccine Call Center ( 0120-761-770 ).
Vaccination Health Damage Relief System
In general, health hazards (becoming sick or remaining disabled) due to side effects of vaccination are extremely rare but cannot be eliminated, so a relief system has been established. Under the Relief System, relief (medical expenses, disability pension, etc.) based on the Preventive Vaccinations Act is available in the event that vaccination causes health damage and requires treatment at a medical institution or leaves a disability. increase.
Regarding the vaccination of the new corona vaccine, if there is a health hazard, you can receive relief based on the Preventive Vaccination Act.
For details, please refer to the Ministry of Health, Labor and Welfare website(Link to external site)(Open in new window)Please confirm. For inquiries regarding the application, please contact the Chiba City Corona Vaccination Call Center ( 0120-57-8970 ).
When you want to prove that you have been vaccinated
In order to reduce the risk of infection in daily life and socioeconomic activities, the government is creating a system that assumes the use of proof of vaccination against the new coronavirus when traveling, participating in events, using restaurants, etc. It is
When using the certificate, please check information about your travel destination, events, restaurants, etc. in advance, and bring it along with your identity verification documents.
As proof in Japan
- Vaccination completion certificate or vaccination record (a photographed image or a copy is also acceptable)
- Vaccination certificate (for Japan)
As a proof of overseas travel
- Vaccination certificate (for overseas)
What is a vaccination certificate?
A vaccination certificate (so-called “vaccine passport”) is one of the documents that officially proves the fact that you have been vaccinated against the new coronavirus. There are certificates for
overseas and domestic use , so please apply according to your schedule.
* For countries and regions where the mitigation of quarantine measures, etc., is approved based on certificates for overseas use, the Ministry of Foreign Affairs of Japan Overseas Safety Website(Link to external site)(Open in new window)It is published in
In addition, when using the vaccination certificate, please check the information about your travel destination, events, restaurants, etc. in advance, and bring it along with your identity verification documents.
For details on the vaccination certificate system, see the Ministry of Health, Labor and Welfare website .(Link to external site)(Open in new window)Please verify.
How to obtain a vaccination certificate (electronic version)
If you have a My Number card and a smartphone, please use the ” New Corona Vaccination Certificate App ” provided by the Digital Agency.(Link to external site)(Open in new window)You can get a vaccination certificate (electronic version) at ” ( issued on the same day ).
How to obtain a vaccination certificate (electronic version)(Link to external site)(Open in new window)In addition, details such as what you need to use the app and the operating environment can be found on the Digital Agency website(Link to external site)(Open in new window)I’m showing you around.
There is no fee for issuance (it is free ), but the applicant will be responsible for communication costs for smartphones, etc.
*If your My Number Card PIN has been locked, please bring your My Number Card and identity verification documents and go to the Citizens General Counter Section of each ward or each civic center to reset your PIN.
*If the content of the certificate issued by Chiba City differs from that of the person who received the vaccination, please contact the Chiba City Corona Vaccination Call Center ( 0120-57-8970 ).
How to obtain a vaccination certificate (paper)
If you have a My Number Card and a smartphone
” New Corona Vaccination Certificate App ” provided by the Digital Agency(Link to external site)(Open in new window)” can be printed by yourself from your home printer or convenience store multi-copy machine using the image saving function of the app.
How to save the image of the vaccination certificate obtained with the app(Link to external site)(Open in new window)In addition, details such as what you need to use the app and the operating environment can be found on the Digital Agency website(Link to external site)(Open in new window)I’m showing you around.
There is no fee for issuance (there is no fee ) , but the applicant will be responsible for communication costs for smartphones, usage fees for multi-function copiers, etc.
If you have a My Number Card
Target convenience stores, etc.(Link to external site)(Open in new window)Vaccination certificates can be obtained at the kiosk terminals (multi-copy machines) installed at stores in Chiba City. .
However, in order to issue overseas vaccination certificates at convenience stores, after July 21, 2022, the ” New Corona Vaccination Certificate App(Link to external site)(Open in new window)” or by mail application, and the passport (passport) used at that time must still be valid (use the passport when traveling).
How to obtain a vaccination certificate at a convenience store(Link to external site)(Open in new window)In addition, for details on issuing vaccination certificates at convenience stores, see the Ministry of Health, Labor and Welfare website(Link to external site)(Open in new window)I’m showing you around.
The issue fee (120 yen) for issuance will be borne by the applicant.
If you do not have a My Number card or a smartphone
As you accept grant application only by mail, please mail necessary documents to the following destination ( you cannot apply at window such as ward offices ).
Using an vaccination ticket issued by Chiba City (with a resident card in Chiba City), we will issue a vaccination certificate showing only the history of vaccinations.
If all the required documents are confirmed, the certificate will be issued in about one week after the application, but it may take about 10 days to be issued depending on the congestion situation of the application .
In addition, if there are any missing or incomplete required documents, additional time will be required for confirmation, such as sending additional documents. In particular, please note that it may take up to 3 months or more to be issued in order to confirm the vaccination history, especially if there is no attached document that can confirm the vaccination history.
There is no fee for issuance (it is free of charge), but the applicant will be responsible for the postage of the necessary documents, the fee for stamps to be affixed to the self-addressed envelope, and the fee for the issuance of the identity verification documents.
|destination||〒260-8722 1-1 Chibaminato, Chuo-ku, Chiba City|
Chiba City Corona Vaccination Call Center Vaccine Passport Issuer
|Required documents||Issuance application form [ PDF / Excel ]|
For those who cannot print the application form, it is placed in each ward regional promotion section. You can also submit a letter with the same content written on it.Identity verification document
[For overseas] Copy of passport(passport) * Page with personal informationa copy of what is doneDocument confirming vaccination history
A copy of the vaccination ticket issued by Chiba City (including the vaccination certificate)Please write the address on the return envelope
and attach a stamp.
* One copy of the document to be issued weighs approximately 5g (for regular mail (standard size), up to 25g costs 84 yen). No delivery method is specified.
* If the reply address is different from the address on the resident card, we will confirm it separately.A copy of documents confirming your maiden name, another name, and alias (only if your passport has your maiden name, another name, and another name)
A copy of your My Number card, driver’s license, family register, resident card, etc. that includes your maiden nameA copy of a document with both the name written on the vaccination ticket and the name written on the passport (only if you are using a nickname, etc. and the name written on the vaccination ticket and the passport are different)
My Number card, driver’s license, copy of resident’s card, residence card, etc.A power of attorney and a copy of the identity verification documents of the representative (only if someone other than the principal applies on behalf of the applicant)
* When mailing, please write the sender’s address and name on the back of the envelope.
*Please note that there are many cases where the application form does not arrive due to insufficient postage.
- When can I receive the additional (3rd) vaccination?
- When can I receive the additional (4th) vaccination?
- Who can receive the additional (fourth) vaccination?
- When and how will the vaccination ticket for additional (3rd and 4th) vaccinations be sent?
- I have a resident card outside of Chiba City, can I receive vaccinations in Chiba City?
- Can I change or cancel my reservation?
- I have lost my vaccination ticket, what should I do?
- Even if the additional (4th) vaccination is started, can I receive the first (1st and 2nd) and additional (3rd) vaccinations?
For other frequently asked questions , please see ” Frequently Asked Questions About New Corona Vaccines “.
Vaccination information provided by national and prefectural governments
Prime Minister’s official residence page
Ministry of Health, Labor and Welfare page
- About the new corona vaccine(Link to external site)(Open in new window)
- Information about booster vaccination (fourth vaccination)(Link to external site)(Open in new window)
- Information about booster vaccination (3rd vaccination)(Link to external site)(Open in new window)
- Information about the first vaccination (1st and 2nd vaccination)(Link to external site)(Open in new window)
- Information about vaccination for children aged 5 to 11 (pediatric vaccination)(Link to external site)(Open in new window)
- About the efficacy and safety of the new corona vaccine(Link to external site)(Open in new window)
- COVID-19 Vaccine Q&A(Link to external site)(Open in new window)
Page of Chiba Prefecture
Call center information
There is an error in dialing the phone number to the call center, etc.
When making inquiries, please check the number carefully to avoid dialing the wrong number.
Things related to vaccination reservation, vaccination place, vaccination ticket issuance
Chiba City Corona Vaccination Call Center
Phone number 0120-57-8970 Reception hours and supported languages are as follows * We also accept calls on holidays (excluding the year-end and New Year holidays)
|supported language||Reception time|
|Japanese, English, Chinese, Vietnamese||(Monday to Friday) 8:30 to 21:00|
(Saturday and Sunday) 8:30 to 18:00
* Those with hearing or speech disabilities can contact us by e-mail or fax.
E-mail : email@example.com
FAX : 043-245-5128 (FAX only form [ PDF / Excel ]
Matters related to post-vaccination side effects and specialized consultations that require medical knowledge
Chiba Prefecture New Corona Vaccine Adverse Reactions, etc. Specialized Consultation Desk
Telephone number 03-6412-9326 (Reception hours: 24 hours * including weekends and holidays)
* If you have hearing or speech disabilities, you can contact us by fax, so please check the Chiba Prefecture website.
Chiba Prefecture New Corona Vaccine Adverse Reactions, etc. Specialized Consultation Desk(Link to external site)(Open in new window)
Information about vaccinations, information about vaccines, etc.
Ministry of Health, Labor and Welfare Covid-19 Vaccine Call Center
Phone number 0120-761-770 (For inquiries from overseas, (+81) 50-3734-0348 ) Reception hours and supported languages are as follows * Includes weekends and holidays
|supported language||Reception hours (Japan time)|
|Japanese, English, Chinese, Korean, Portuguese, Spanish||From 9:00 to 21:00|
|Thai||From 9:00 to 18:00|
|Vietnamese||From 10:00 to 19:00|
* Those with hearing or speech disabilities can contact us by e-mail or fax, so please check the website of the All Japan Federation of the Deaf.
(Ministry of Health, Labor and Welfare) Counseling counter for hearing-impaired persons regarding new coronavirus and vaccines (FAX/email address)(Link to external site)(Open in new window)