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In the United States, the Centers for Disease Control and Prevention (CDC) allows people with severe allergies to be vaccinated, but asks them to remain under medical supervision 30 minutes after receiving the injection to verify any adverse effect.
A health worker from Alaska (USA) suffered a severe allergic reaction after receiving the Pfizer vaccine against COVID-19 on Tuesday and had to be hospitalized, sources familiar with the incident explained Wednesday to The Washington Post and The New York Times.
The health worker, whose identity is unknown, had not previously had allergic reactions to any medicationsAlthough it is not known if he had other types of allergies, a person familiar with the matter told The New York Times.
After receiving the vaccine on Tuesday, the affected person was today, Wednesday, still in the hospital in stable condition, according to The Washington Post.
Neither Pfizer nor the Alaskan authorities have yet provided details about the incident, which is reminiscent of two other similar cases in the United Kingdom, where two people with a history of severe allergies suffered a negative reaction to the vaccine developed by Pfizer and its German partner BioNtech.
In relation to what happened, the agency that regulates drugs in the United Kingdom issued a warning to ask that not all those who have experienced allergic reactions in the past get vaccinated serious drugs, some foods or another vaccine.
However, in the US, the Centers for Disease Control and Prevention (CDC) do allow people with severe allergies to get vaccinated, but ask them to stay under medical supervision 30 minutes after receiving the injection in order to check for any adverse effects.
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Last Friday the Food and Drug Administration (FDA), the body that regulates the marketing of drugs in the US, approved the use of Pfizer’s vaccine to all adults over 16 years old after a rigorous examination to assess its risks and benefits.
Thus, on Monday the vaccination began in 145 parts of the country, while on Tuesday it did so in 425 and today in 66 on Wednesday, in a process that will continue for weeks.
The safety of the Pfizer vaccine was examined in a clinical trial with 40,000 volunteers and has a 95% effectiveness.
For tomorrow, Thursday, an advisory committee of the FDA is expected to evaluate a second vaccine, that of the pharmaceutical company Moderna, whose emergency authorization could occur in the coming days.
The immunization campaign has come at the worst moment of the pandemic for the United States, which has already exceeded 300,000 deaths from covid-19 and is registering 3,000 deaths a day, a figure higher than the number of people who lost their lives in the attacks of the September 11, 2001.
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