The US CDC has said that a third dose of Pfizer’s vaccine does not cause worrying side effects.

The United States Centers for Disease Control and Prevention (CDC, for its acronym in English) decided on Tuesday that receiving a third dose of Pfizer vaccine causes worrying side effects, a few days after allowing its administration to millions of people in the country.

A study published by the CDC concludes that the “side effects” after receiving a third dose of Pfizer were “similar to those seen after the second dose”.

American health authorities They hope the results of this study, carried out between mid-August and mid-September, will convince the country’s vulnerable population that they have received the full directive from Pfizer to receive a booster dose.

More than 400,000 Americans took this third dose of Pfizer in pharmacies across the country last weekend, after the CDC authorized the measure last Friday, the White House response coordinator to covid-19, Jeff Zients.

Besides, “Nearly a million people have scheduled pharmacy recall appointments in the coming weeks”Zients added at a press conference.

Booster doses are approved in the United States for about 20 million people who had their second injection of Pfizer at least six months ago and which meet a series of conditions.

This group includes people over 65, adults with conditions such as diabetes or obesity, and workers at higher risk of infection, such as health workers, teachers or shop workers. power supply, provided they first received full direction from Pfizer.

In the study released Tuesday by the CDC, nearly 12,600 people who responded to a survey after receiving a third dose of the covid-19 vaccine.

79.4% of participants reported feeling pain or inflammation at the injection site after the third dose, compared to 77.6% who said the same after receiving the second.

Besides, 74.1% reported having side effects such as fever or headache after receiving the booster dose, compared to 76.5% who suffered from it after receiving the second vaccine.

This shows that “for now”, Third doses of Pfizer vaccine “well tolerated”, said the director of the CDC, Rochelle Walensky, at the same press conference.

The president of the United States, Joe biden, received his third dose of Pfizer vaccine at the White House on Monday, in an effort to encourage more Americans to follow suit.

The US decision to carry out booster doses for certain groups contradicts demands by the World Health Organization (WHO), which this month asked developed countries not to take the step at least until in December, given the unequal distribution of doses on the planet.

(With information from EFE)

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