The Centers 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, these secondary effects include “any unexpected health situation (unfavorable or unintended sign, abnormal laboratory finding, symptom or disease) that occurs after vaccination and does not necessarily have a causal relationship with it ”.
The 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.
“An 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 due 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, immune reaction occurs naturally in response to viral load. In this way, the body will remember how to fight this microorganism in the future. Although you may experience unwanted reactions, this does not mean that something is wrong, but rather it is a sign that a defense is developing.
Adverse effects should not last more than two days. In the event that reactions to the Comirnaty vaccine – made 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 pharmacovigilance role is the Ministry of Health of the Nation, which is in charge of analyzing and investigating the causes of possible adverse events related to the vaccine.
If the effects continue, the patient must report in the same establishment where he received the drug, so that they can register the case in the system, ensure their care and start the investigation. Although each country develops its own monitoring processes, 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 after 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.
People most at risk of experiencing these heart inflammations are the 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 heart rhythm or chest pain, should consult directly with a cardiologist to begin with the most appropriate treatment.