The Fallacy That Vaccinating 70% Achieves Group Immunity: "we Don't
Health

The fallacy that vaccinating 70% achieves group immunity: “We don’t know when we will reach it”

Specialists do not consider 70% vaccinated as a “magic” figure that justifies the lifting of measures. The concept of group, or herd, immunity is one of the most slippery of all that we have learned with the pandemic. It is very easy to define it: the indirect protection that is achieved when a population becomes […]

The 'enigma' Of Children And Covid: Is It Necessary To
Health

The ‘enigma’ of children and Covid: is it necessary to vaccinate them to achieve group immunity?

A new study published in the journal ‘JAMA Network Open’ suggests that it would not be essential as long as some variables were considered. As the vaccines against Covid-19 are deployed in Spain, the composition of the groups with priority to receive the sera from the different manufacturers is unraveling, at least from those who […]

The Enigma Of Immunity Against Covid: These Are The People
Health

The enigma of immunity against Covid: these are the people who will have to be vaccinated every year

Although the data seems to indicate lasting immunity, there are population groups that will need a periodic booster. In a kind of Stockholm syndrome of the pandemic, we all seem to assume the need for a annual periodic vaccination to keep SARS-CoV-2 at bay. In fact, the European Union announced two weeks ago the acquisition […]

Astrazeneca, Pfizer Or Moderna: How Much Immunity Does A Single
Health

AstraZeneca, Pfizer or Moderna: how much immunity does a single dose give and for how long?

Several countries, including Spain, are forced to assess a delay in the second dose of the Covid-19 vaccine or a combination of several. The difficulties of the vaccination campaign against Covid-19 in the European Union, weighed down at first by delays in the delivery of doses by Pfizer-BioNTech and subsequently due to the suspension of […]