The Pfizer, Moderna and AstraZeneca vaccines against Covid-19 are effective against the Delta variant at the time the full regimen is received. Thus, several autonomous communities are advancing the second dose of AstraZeneca in the group of 60 to 69 years, where only 50% are fully immunized.
The advance of the Delta variant and the increase in the accumulated incidence have not yet translated into an increase in The explanation is that most of the infections are being registered by those under 30 years of age, the age group where this virus is least harmful. And, in addition, the population over 60 years of age, the one that carried out the greatest number of deaths and hospitalizations, is widely immunized.
However, there is a specific age group, that of 60 to 69 years, who has not yet received the second dose of AstraZeneca, since this vaccine requires a period of 12 weeks between injections. A reality that places this vulnerable group in a position of less security compared to the Delta variant, because the maximum effectiveness against this strain is achieved with the second dose.
Thus, Pedro Gullón, a member of the Spanish Epidemiology Society, pointed out in eldiario.es that what can worry the most now, in addition to young people with chronic pathologies, are people who have a dose of AstraZeneca. “There is immune protection, but not that much. They should be close by dates to receive the second, and there they are protected from the Delta variant. We must encourage trying to rehire that age group well,” he explained to the outlet.
For this reason, the communities of Madrid, Catalonia, Navarra, Galicia, Castilla y León, Castilla-La Mancha, the Balearic Islands, the Valencian Community and Andalusia have begun to advance the second dose. In principle, the space between punctures with AstraZeneca should be 12 weeks, but the health authorities allow it to be reduced to 10. However, Castilla y León has shortened that time to 8 weeks.
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