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The data that are beginning to arrive are confirming that the booster dose clearly reduces the risk of serious illness and death from Covid.

Two countries, Switzerland and Chile, are already distinguishing in their statistics between three groups: unvaccinated people, vaccinated with the complete schedule and vaccinated with a booster.

Chile has mostly used the Chinese vaccine, while Switzerland, like Spain, has mostly used RNA vaccines (Pfizer and Moderna).

Their figures, therefore, provide us with invaluable clues.

According to analysis of Swiss data by Our World In Data, mortality varies greatly between population groups with different pattern classes. In unvaccinated people, the weekly mortality rate amounts to 13.06 per 100,000 inhabitants, a figure that drops to 1.44 -about nine times less- among people with a complete regimen and without a booster dose. Finally, in the population with a booster dose, the rate decreases to 0.27. That is,

48 times less than in unvaccinated people and five times less than in those vaccinated without booster

.

Figures from Chile, which Our World In Data has also dissected, show similar results, with a weekly mortality rate of 3.26 among the unvaccinated population; 0.63 in vaccinated without boosting; and 0.13 in those vaccinated with a booster. Several countries offer statistics that distinguish between vaccinated and unvaccinated, and

the difference in mortality is notable in all of them

, but the data from Switzerland and Chile also make it possible to distinguish the already reinforced population group, which has shown clearly superior protection in both cases.

"These data are brutal," Joan Carles March, a professor at the Andalusian School of Public Health, tells this newspaper, indicating that the difference is great both between vaccinated and unvaccinated as well as between those vaccinated with reinforcement and those who still do not have it. . «

It is clear that with the third dose there is an increase in protection

», he points out.

"In certain populations, it helps us improve the immune situation and raise a very important defense against Covid," considers March.

Is it recommended, then, the booster dose for all vaccinated people?

"Right now, I think,

for those over 40, without a doubt

."

In Spain it is already being put from the age of 18, a measure that has been criticized by the Spanish Society of Immunology.

At younger ages, "it must be assessed calmly," weighs March, although he adds: "They can be measures that help improve the situation of these people."

Spain, behind in third doses

Spain has just exceeded 18 million people with booster doses. A percentage already higher than 38% of the total population, although, in reality, it is still behind those achieved in the United Kingdom (53.5%), Germany (47.2%), Italy (45.5%) or France (43%). We were the first in the first two doses, but the third has not been understood in the same way, or has not aroused the same enthusiasm. «

There are people who think: 'I've already taken the two doses, I've already done everything'. Well, no

», warns March.

“With the two doses,

after a while, the possibilities of protection against the virus are minimized

, to enter a hospital, an ICU, even die. Therefore, it is essential to take into account the third dose, we must put the issue back on the table, "he says. «It is true -concedes March- that the contagiousness decreases in a smoother way» with the booster dose, since contagions «with two doses or with three» are still possible. However, he emphasizes, it does “very significantly reduce” the risk of serious illness after the booster dose, as the data from Switzerland and Chile have just shown.

Two recent studies conducted in Israel have also reached the same conclusion.

One of them looked at 840,000 people over the age of 50 and found a reduction in the daily mortality rate from 2.98 in the non-boosted group to 0.16 among those who had booster doses.

The second investigation followed 4.7 million people aged 16 and over and concluded that

both infections and severe illness are significantly reduced

by the booster dose.

Vaccination in Spain

18,092,445

More than one in three Spaniards has

a booster dose

.

The percentage is very similar to that of the European Union average, far from the position occupied by Spain in the first two doses.

85.9% in Galicia

The community with the highest percentage of the total population with a complete guideline is Galicia.

Spain as a whole remains

stagnant at 80.6%

, which has barely moved since the fall.

Public Health and Sociology

Not all unvaccinated people have the same ideas or motivations.

It is necessary to find out what they think and clear up their possible doubts, "in order to ensure

that the number of people vaccinated is greater

," says March.


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