Spacing the second dose of the vaccine beyond 21 days is not harmful. Canada, in fact, focused on vaccinating the maximum number of citizens with the first vaccines, and four months later the second dose arrived. Immunity was strengthened and the current percentage of the population vaccinated with the complete regimen reaches almost 60%, this study corroborates how successful your vaccination campaign has been.
In some provinces or autonomous communities getting the second appointment was given at the moment of inoculating the first dose, so the dates were exact. In others, as has occurred in the Community of Madrid, the exponential increase in cases among the youngest people caused many second doses to be dedicated to this population group that had not yet had their turn, delaying the second dose for some people.
Hopefully at 28 days, in other cases beyond. But as the company and the health authorities say, you can wait until 42 days and immunity will not be compromised. Even if now the coronavirus variants They can jeopardize this situation, a Health alert that asks that the second dose be given as soon as possible and not be left until after the holidays.
When is the second dose depending on the vaccine
- Pfizer, at 21 days.
- Modern, at 28 days.
- AstraZeneca, between 4 and 12 weeks later depending on the European Medicines Agency.
- Janssen, it’s just a dose.
What happens if the second dose of Pfizer is delayed
According to the AEMPS, “It is considered that the impact of delaying the second dose of this vaccine against COVID-19 for a short period of time will not diminish the protection achieved. A delay of one week, which may be necessary for logistical reasons, the conditions of the person who will receive the vaccine, or adjustments in the care activity, is not expected to have an impact on the efficacy of the vaccination ”, therefore that the 28 days falls within the normal and expected range.
The fact of vaccinating as soon as possible is to protect the population, especially now that the Delta variant may be predominant by the end of August, according to the European ECDC, that is why it is it is essential to advance vaccination as soon as possible.
Even if we reach 42 days, even if it is stated in the vaccine package insert, there is a risk that “the protection conferred by the first dose will be of short duration compared to that obtained after two doses”, and that interval of time is the one that worries.