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Covid: what are the symptoms of the Pfizer vaccine in the days after the application


The US Center for Disease Control and Prevention (CDC for its acronym in English) assured that the benefits of immunization with the vaccine developed by Pfizer-BioNTech are much greater than the registered risks and revealed that only one in every 100 thousand people had a severe allergic reaction.

As with inoculations for other diseases, Pfizer’s Covid vaccine has some Adverse effects that were investigated since their creation and that, according to the schemes of the Ministry of Health of the Nation, are classified as Events Supposedly Attributed to Vaccines and Immunizations (Esavi).

In its definition, among these side effects is located “any unexpected health situation (unfavorable or unintended sign, abnormal laboratory finding, symptom, or illness) that occurs after vaccination and is not necessarily causally related to vaccination.

US health authorities showed that after 1,893,360 injections of the vaccine were administered between December 14 and 23, 21 cases of anaphylaxis, the allergy caused by the drug, were documented.

“One assessment proposal for someone to decide to get vaccinated is whether the negative consequences that Covid-19 could cause are greater than the risk of a serious reaction to immunization,” said the head of the CDC Nancy Mesonnier.

In any case, the institution stated that vaccination sites are ready to treat allergy with epinephrine.

Of the 21 cases that registered the allergy after receiving the dose, 90% occurred in women, with an average age of 40 years. The authorities also indicated that of that total, 17 were discharged, while four were hospitalized, without registering any deaths.

As with any medicine, when you receive a vaccine, the immune system receives an alert and learns to resist specific infections, activates defenses, recognizes the virus or bacteria and produces antibodies. That is to say, the immune reaction appears naturally as a response to the viral load. In this way, the body will remember how to fight that microorganism in the future. Although you may experience unwanted reactions, this does not mean that something is wrong, but it is the sign that a defense is developing.

adverse effects should not last more than two days. In the event that reactions to the Comirnaty vaccine -produced by Pfizer-BioNTech- exceed 72 hours, an over-the-counter symptomatic treatment (Paracetamol) can be used within 14 days.

In the Argentina, the person responsible for assuming the role of pharmacovigilance is the Ministry of Health of the Nation, which is responsible for analyzing and investigating the causes of possible adverse events related to the vaccine.

If the effects continue, the patient must inform the same establishment where he received the drug, so that the case is registered in the system, his attention is ensured and the investigation begins. Although each country develops its own monitoring processes, they all follow the guidelines of the World Health Organization (WHO).

Even if most adverse reactions are expected, are usually mild and disappear in the short term, serious side effects have also been reported. In a recent study, the European Medicines Agency confirmed the risk of developing myocarditis and pericarditis when vaccinated with Pfizer BioNTech or Moderna, although in a number of one every 10,000 people.

The people most at risk of experiencing these heart inflammations are young men and, more often, after second dose.

Both side effects are already under surveillance and patients who have symptoms related to palpitations, shortness of breath, irregular heartbeat or chest pain should consult a cardiologist directly to start the most appropriate treatment.

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