I received a single dose of vaccine: when is the booster dose?

The booster dose of vaccine against the virus responsible for covid-19 is extended to those over 18 from November 27, 2021. If you have received a dose of a vaccine, here is what to do, compared to your booster dose and the validity of the health pass.

Olivier Véran announced it on November 25, 2021: the booster dose of vaccines against the virus responsible for the disease covid-19 is open to all adults, from 5 months after the last injection. The government thus followed the recommendation issued by the High Authority for Health, shortly before the speech by the Minister of Health.

In the wake of these announcements, platforms like Doctolib and Vite Ma Dose were quickly overloaded, a sign that many French people wanted to book their appointment online as soon as possible to receive a new dose. However, not all people over 18 are the same. People who have previously received two doses of the Moderna vaccine should opt for Pfizer under the age of 30, but have a choice after that age, for example. And other people have only received a single dose of a vaccine yet.

If you are in this situation, here is when you can do your booster dose, and the consequences on the validity of your health pass.

Summary of situations for the COVID vaccine booster dose. // Source: Numerama table

In all of the following cases, please note that if you are eligible for the booster dose, the validity of the non-booster pass depends on your age:

  • If you are over 65, your pass may become invalid as of December 15, without a booster dose.
  • If you are under 65, your pass may expire on January 15, 2022.

What should I do if I received the first dose of a two-dose vaccine?

First scenario: you have recently started to be vaccinated against the disease covid-19, and are halfway through your primary vaccination with a two-dose vaccine: you have received a first dose.

Without a full vaccination schedule, you are currently not eligible for a booster dose. You should therefore receive your second dose of vaccine as planned (subject to not being infected in the meantime, of course, in this case refer to the 1st scenario explained in this article). Then, you will be eligible for your booster dose 5 months after this second dose. Your health pass will be valid as soon as you meet the deadlines for the 2nd and 3rd injection.

What should I do if I received a dose and then became infected?

You may have received a first dose of a two-dose vaccine (Moderna, Pfizer, AstraZeneca) and then have been infected with covid-19 disease.

If you were infected at least 15 days after receiving your dose, you are eligible for a booster dose 5 months after your infection. You have a maximum of 7 months to complete this booster dose, otherwise your health pass may be invalidated.

What should I do if I have been infected and then received a dose?

The reverse can happen: you were first infected and then received one dose of a two-dose vaccine.

Again, you are eligible for a booster dose 5 months after the single dose you received. The maximum time to keep a valid health pass after having received the booster dose is still 7 months.

What should I do if I have received a single dose vaccine?

The Janssen vaccine is, from the outset, based on a single dose, that is to say a single injection. But in an August 2021 notice, the High Authority for Health recommended that this regimen be supplemented by an additional dose with a messenger RNA vaccine. Since then, the only injection of the Janssen vaccine must be followed, from 4 weeks later, by a second injection from Pfizer or Modern.

This second dose, which acts as a reminder for people vaccinated with the Janssen monodose, will henceforth be compulsory for the validity of the health pass.

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