I received the Moderna vaccine: which vaccine should I choose for my 3rd dose?

You may want to book your appointment to receive your covid-19 vaccination booster dose. Here is which vaccine to choose (Moderna or Pfizer) if you have previously received Moderna’s vaccine.

While Olivier Véran spoke about the coronavirus epidemic this Thursday, November 25, 2021, announcing the 3rd generalized booster dose, it seems that Doctolib has taken a little lead. The site already allowed people aged 18 and over to reserve a 3rd dose of vaccine, before his speech.

This third dose has been recommended in particular, from the age of 18 and 5 months after the primary vaccination, by the Haute Autorité de santé. From January 2022, this booster dose will now be necessary so that people who have been vaccinated for the first time continue to have a valid health pass – within a maximum of 7 months after their last injection.

Would you like to book your booster dose appointment now? If you have previously received two doses of Moderna vaccine, you may be wondering which vaccine to select when booking a slot. As a reminder, you will have the choice between Pfizer and Moderna vaccines when making this appointment.

What if you are under 30 and have had the Moderna vaccine before?

If you have already received two doses of Moderna, the choice of vaccine for the booster dose depends on your age.

  • And you are over 30 years old, you have the choice of receiving Moderna or Pfizer, whose effectiveness is equivalent,
  • And you are over 12 and under 30, you must select the Pfizer vaccine.
The choice depends on your age. // Source: Doctolib screenshot

On November 8, 2021, the Haute Autorité de santé let know that the Moderna vaccine was no longer recommended for people under 30, due to a lack of perspective on the risk of myocarditis. This is why you should opt for the Pfizer vaccine if this is the case: if you are under 30 when you receive your booster dose (the 3rd dose).

If you are under 30 years old and were vaccinated with two doses of Moderna several months ago, do not worry: the risk of myocarditis only exists in the first days after vaccination. Vaccines have side effects, which are quite normal, within a few days of being given them. It then takes a few weeks for immunity to the SARS-CoV-2 virus to kick in.

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