Wednesday, October 20

Questions and Answers About COVID Vaccines



Spain will begin to administer Pfizer’s vaccine against covid-19 next December 27. The president of the Spanish Society of Vaccination, Amós García Rojas, clarifies to Efe some doubts that may arise and is categorical: The “most terrifying” side effect is not putting it on.

1.- Scientists and authorities say that approved vaccines are safe, but is it really certain having developed them so quickly?

Such rapid development is a historical hito of science rather than a demerit, which has made it possible that, faced with a very serious public health problem, the only instrument is available that will allow us to modulate the problem in the shortest period of time possible.

If a drug is authorized by regulatory bodies, which are made up of professionals of very high scientific solvency, it is because they are crystal clear that the product is safe and it has the profiles of reasonable efficacy, if not, with total security, they would not authorize it.

2.- Does the vaccine protect against infection or does it prevent the disease from being serious if I am infected?

The information that is available indicates that the vaccine protects against the disease, but what we do not know, because there is a lack of vaccination time ahead, is whether it also protects us from infection. I can be in contact with the virus and not develop the disease because I am vaccinated, but I can get infected and transmit it to other people.

That’s why it’s so important take into account that, even if we are vaccinated, the protection measures with which we are living must continue to be maintained, at least, until we reach 70% vaccination coverage, which is what would allow us to start saying goodbye to the pandemic.

3.- So, do I have to keep wearing masks, observe social distance and hand washing for a long time?

Even if we start to vaccinate, we are going to continue in pandemic. I cannot say for how long it will be necessary to continue with these measures, because I do not know the rate of arrival of the vaccine, nor how we will overcome the reluctance of that sector, which the surveys show how numerous, which has certain misgivings about being vaccinated initially.

At first, I think we can think that in June or July we will have a large percentage of citizens vaccinated, but I am not sure that it is 70%.

4.- What are the most normal side effects that I can have?

The most normal could be fever, tired feeling and pain in the administration site.

But the most terrifying is not wearing it, because the right ground is being created to continue increasing the number of more than one and a half million deaths that we have in the world from this disease.

5.- Why do I have to take two doses and what happens if I decide not to take or forget the second?

If you do not take the second dose, you are not adequately protected. It is like children, in the childhood vaccination calendar several doses of certain vaccines are put, because the effect that is achieved with each dose must be reinforced.

In this case it is the same, two doses are required to be fully protected and increase the quality of the protective response.

6.- Am I at risk when getting vaccinated if I have any type of allergies?

If there is a history of severe allergies or allergies to any component of the vaccine, is contraindicated. It is as if one is allergic to nuts, that one cannot eat them.

7.- What is the efficacy of the vaccine?

Based on clinical trials and evaluated by drug regulatory agencies, lhe efficacy is around 95%, both in the Pfizer and Moderna vaccines.

Although one thing is effectiveness and another effectiveness. The first is always measured under ideal conditions, with controlled groups. Another thing is when you start to apply it en masse in the population, when, perhaps, the effectiveness can drop a little, or not. In any case the efficiency is quite high.

8.- Even if the covid-19 has already passed, do I have to get vaccinated?

As we do not know the duration of the protective response produced by having passed the disease naturally, it even comes in handy. Also, if you are an asymptomatic carrier and you receive the vaccine, absolutely nothing happens.

9.- How long does the protection last, will it be necessary to get vaccinated every year as with the flu?

It is not known, but for a matter of time. As the administration has not yet begun, the duration period is not known. which has the protective response. This is not known at first with any vaccine.

We must wait for the vaccination to start to monitor the protective response. It may be that you have to put it on every year, like the flu, but it may also not be the case, maybe the protective response is very robust and is not necessary.

10.- Can the new variant of the coronavirus that has emerged in the United Kingdom affect in any way the vaccines that have been made before knowing it?

It shouldn’t, because even though the mutation affects the spike protein (the one that the virus uses to enter human cells), which is used in the vaccine, it is a small mutation and the vaccines act on the entire territory, which makes it very difficult for it to affect the vaccine.


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