The expert leading the Trump administration’s covid-19 vaccine program, Moncef Slaoui, said Tuesday that Pfizer and Moderna’s covid-19 vaccines are safe, with only 10% to 15% of volunteers. reporting side effects that were “significantly noticeable”.
The effects can last up to a day and a half, according to the expert, who leads the vaccine purchase and development program in the United States, called Operation Warp Speed. People who have experienced side effects have reported redness and pain at the injection site, as well as fever, chills, muscle aches and headaches. However, most volunteers did not report “notable” side effects.
“No side effects have been reported differently between the group that received the placebo and the group that received the vaccine in these two trials, which is very reassuring,” Moncef Slaoui told The Washington Post. “Although we know the short / medium term effects of the vaccine, safety in the very long term is not yet understood by definition,” said the expert.
The United States is preparing to distribute a covid-19 vaccine in just two weeks. A panel of the Centers for Disease Control and Prevention will soon decide who will be the first group to obtain treatment, once authorized by US regulators.
Moderna and Pfizer vaccines require two doses about a month apart to achieve maximum effectiveness. Both companies recognized that their vaccines could induce side effects that are similar to the symptoms associated with mild covid-19, such as muscle pain, chills and headaches.
Participants in the vaccine trials against the new coronavirus from Moderna and Pfizer said in September that they had experienced high fever, body aches, severe headaches, daytime tiredness and other symptoms after receiving the vaccines.
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