for whom, moderna, pfizer, deadline

The booster vaccination (3rd dose) is strongly recommended for 12 to 17 year olds and adults. What is the deadline for this? With Pfizer or Moderna? After the Covid? For whom ? At what age ? What efficiency? What are the possible side effects?

The immunity conferred by the anti-Covid vaccination decreases over time. For this reason it is necessary to create one booster vaccinationso a 3rd doseto strengthen his immune system against the coronavirus and its variants. Who should get a booster shot? when to do What is a full vaccination schedule? Is it mandatory to keep the health passport? What deadline? What are the possible side effects? To understand everything.

Who is affected by the booster vaccination?

People aged 12 and over can get a booster shot by allowing a minimum period of time after their last injection or infection with Covid.

What is the deadline for conducting a booster vaccination?

The booster vaccination must be given:

  • From 3 months for people aged 18 and over and more after the last dose of the initial regimen.

→ People who have been vaccinated with Janssen must receive an additional injection from 4 weeks after her vaccination, then a booster vaccination already 3 months later.
→ People who had a Covid-19 infection and then received a Janssen dose are eligible for the booster dose from 4 weeks after their injection.

  • For people who had covid after their Janssen injection, 2 situations:

If infected less than 15 days after injection: People receive an additional dose of the mRNA vaccine 4 weeks after infection. You are eligible for the booster vaccination from 3 months after this additional dose.

If infected more than 15 days after injection: Individuals do not need to supplement their vaccination schedule with an extra dose. From 3 months after the infection they are eligible for the refresher.

→ People who have had Covid-19 more than 15 days after their additional dose do not need to take their booster dose unless traveling to a country where the booster dose is mandatory. In this case, they can already carry out their booster vaccination 3 months after their infection.

  • From 6 months after the last injection for minors aged 12 to 17 years.
  • It is recommended for immunocompromised individuals to follow their doctor’s advice on the most appropriate vaccination schedule.

One infection = one injection. So if you contracted Covid-19 after your initial vaccination schedule, you do not need to have a booster shot. However, for people who wish to leave the national territory, the booster vaccination must be carried out in order to have a valid vaccination certificate.

L’Assurance Maladie has launched the My Covid vaccination reminder service, which allows you to:

  • to know when you need to take your booster shot against Covid-19
  • to find out the expiry date of your vaccination card if you do not send a reminder.

What is a full vaccination schedule?

  • About the vaccine COVID-19 vaccine Janssen, The original scheme is completed in 28 days after one dose.
  • With other vaccines The initial treatment regimen is completed 7 days after administration of a 2nd dose. A Covid-19 infection is equivalent to giving one of these first 2 doses.

► To get a complete vaccination card with QR code, several options:

– During your vaccination appointment, you will receive a vaccination certificate with a QR code from the medical specialist.

– Download it from the online service of health insurance (Ameli) with your social security number (if you have one);

– Take your vital card (if you have one) to a healthcare professional (doctor, pharmacist, nurse, midwife, etc.) so that they can issue you a new one.

Where can you get your booster shots?

You can get vaccinated:

  • in one vaccination center ;
  • at a health professions :
  • in pharmacy,
  • at a physiciana oral surgeonsa male nurse or a midwife,
  • in one laboratory of medical biology.

You can make an appointment to call us back Doctolib, Maiia, Keldoc, Quick my Dose. People over 65 can be vaccinated at any vaccination center without an appointment.

When should you do a vaccination reminder to keep your health record?

The vaccination certificate has been revoked since March 14th. However, the health passport is still required in certain places, especially hospitals, retirement homes, institutions for disabled adults, nursing homes. Several cases:

► If you have between 12 and 17 years oldyou can get a booster shot as soon as 6 months after your first vaccination. This refresher shot is recommendedbut it is not not mandatory as part of the health pass.

► If yes over 18 years and 1 monthyou can get a booster shot as soon as 3 months after your first vaccination and within up to 4 monthsotherwise your sanitary pass will be deactivated.

► If yes had the covid at least 3 months after your first vaccination you will not have any no need to receive a booster vaccination. With your positive test result you can extend your pass (certificate of reinstatement).

Get your vaccination booster to keep your health record © My Covid tips

If you want to go on a trip abroad : The certificate of recovery is not recognized by all countries and a booster vaccination may be required.

– A Serological test (or serology) does not dispense with a booster vaccination and does not replace a health pass.

When should you get a booster shot if you’ve had the Covid?

If you had Covid after your first vaccination, you can use the QR code of your positive PCR or antigen test at least 11 days old (also called certificate of reinstatement) insofar health passport. she period of validity depends on the time that elapsed between vaccination and infection.

Time of positive test Validity period of the reinstatement certificate
Less than 3 months after the first vaccination 4 months
More than 3 months after the first vaccination Unlimited

Who should take a 4th dose of vaccine?

Since March 14, 2022, Individuals 80 and older, and residents of nursing homes and USLDs Entitlement to a second booster vaccination from 3 months after injection of the first booster vaccination according to the opinion of the advisory board on the vaccination strategy of February 18th, 2022. The same applies to immunocompromised people.

How effective is the booster vaccination?

The booster dose restores an immune response to the Omicron variant.

According to the opinion of the Scientific Council of December 16, 2021, the booster dose (2nd or 3rd dose) allows the restoration of an immune response to the Omicron variant. It protects, probably at a good level, against the occurrence of severe and serious forms, but only partially against infection with the Omicron variant. The first estimates of real-world vaccine efficacy have documented documented protection against symptomatic forms of infection with the Omicron variant of SARS-CoV-2, ranging from 80% 1-2 months to 34% 4 months after the second dose of a Pfizer Vaccine increases to 75% two weeks after a booster dose. According to the Haute Autorité de Santé, the booster dose makes it possible Increasing the effectiveness of the vaccine in cases of infection and severe forms. “The observed real-world efficacy data for a booster dose of Comirnaty® vaccine administered first in subjects aged 60 years or older who were vaccinated at least five months previously with two doses show a acceptance the risk of infection from Covid-19 (…), 11.3 times fewer cases of infection and Cases of severe forms 19.5 times lower among those who received a booster dose than among those who did not. The effectiveness of the 3rd dose is observed in a short delay (very strong immunological reaction in a few days, Clinically significant protection clearly visible from day 7) the Covid Scientific Council specified in a statement dated November 22, 2021. The administration of a booster vaccination would also decrease viral load and indeed probably the contagious People who develop an infection with SARS-CoV-2.

Pfizer and Moderna vaccines have received an extension of their marketing authorization for the recall from the European Medicines Agency (EMA). On October 25, Moderna received an extension of the indication to administer a booster dose of 50 mcg (half dose) to people 18 years and older. “Pfizer’s Spikevax® (Moderna) and Comirnaty® are two safe and effective vaccines, but studies show a slight superiority of Spikevax® in terms of efficacy and lower risks of myocarditis for Comirnaty®, especially for people under 30 years of age” states the HAS in a statement dated November 8, 2021. The HAS recommends the following:

For under 30s: to do his booster dose with that Comirnaty® vaccine (Pfizer). “In the population under 30 years of age, the risk of myocarditis for Pfizer’s Comirnaty® vaccine compared to Moderna’s Spikevax® vaccine (100 mcg) appears to be approximately 5-fold lower in 12- to 29-year-olds“, specifies the HAS in its press release.

For those over 30: to do their booster dose with the Pfizer or Moderna vaccine. “This is particularly interesting for people at risk for a severe form of Covid-19” notes that the HAS recommends administration of half a dose for boosting (50 µg RNA instead of 100 in the primary immunization).

For an mRNA vaccine (Moderna and Pfizer) can not be used HAS, in a news release dated January 14, 2022, approves the administration of Janssen as a booster dose. “The Janssen vaccine can be offered to people over the age of 55 even if they have received two doses of mRNA vaccines as their primary vaccination. Under the age of 55, it can only be used in exceptional cases as part of a joint medical booster decision that includes clear information on the risks associated with this vaccine,” explains the HAS.

What are the side effects of the booster vaccination?

A study published by the American health authorities in September 2021 showed that the side effects observed after a third booster dose of the Pfizer and Moderna anti-Covid vaccines were the same as with the 1st and 2nd doses. “Booster doses are well tolerated‘ said Rochelle Walensky, director of the American CDC, during a press conference. The frequency and type of side effects were similar to those observed after the second dose of vaccine and were mostly mild or moderate in severity and short-lived.” Among the side effects listed by the CDC (more than 268,000 participants):

  • Injection site reaction (for 79% of respondents): pain, redness, swelling
  • fatigue (for 74%)
  • headache and muscle pain (for 55%)


– Opinion of the COVID-19 Scientific Council of November 20, 2021 – Conditions of integration of the memory / 3rd dose in the health passport

-Saciuk Y, et al. J Infection Dis. 202; 2:jiab556. Efficacy of a third dose of BNT162b2 mRNA vaccine

– Barda N., et al. Lancet. 2021.29: S0140. Efficacy of a third dose of BNT162b2 mRNA COVID-19 vaccine in preventing severe outcomes in Israel: an observational study

– Everything you need to know about the vaccination booster against Covid-19. November 10, 2021.

– Press release from the High Health Authority, 24 August 2021.

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