These are the side effects of the new Johnson & Johnson vaccine

Currently, Pfizer and Moderna are the only two coronavirus vaccines that have been approved by the US Food and Drug Administration (FDA). However, another COVID vaccine is expected to reach Johnson & Johnson authorization stage soon. Unlike the others, this vaccine is only one dose – but new research suggests it may work just as well as the others. New test data released Jan. 13 in the New England Journal of Medicine has published information on the safety, efficacy and possible side effects of Johnson & Johnson’s new vaccine.

During the trial, researchers at Johnson & Johnson randomly assigned 805 participants to receive a high or low dose of the vaccine – which is called Ad26.COV2.S – or a placebo. Researchers looked at two age groups in this trial: healthy adults aged 18 to 55 and those 65 and older. According to the study, 90% or more of all participants had neutralizing antibodies 29 days after being vaccinated and 100% had antibodies 57 days after receiving their vaccine.

And while the excitement about the potential to have your COVID vaccination done in one vaccine is warranted, as with any other vaccination, you should expect potential side effects. According to the study, there are five common side effects that can come from the new Johnson & Johnson COVID vaccine – which, interestingly, were more common among those aged 18 to 55 than among those 65 and older. Read on to find out what they are, and to learn more about vaccines, know that if you are taking these over-the-counter medications, you must stop before you get the vaccine.

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In trial participants aged 18 to 55, fever was reported as a side effect in 20% of those who received a low dose and 48% of those who received a high dose. Among those 65 and older, only 4 percent of low-dose recipients and 10 percent of high-dose recipients reported having a fever. “All cases of fever occurred within 2 days of vaccination and resolved within 1 or 2 days,” the researchers noted in their study. And for the symptoms you may be experiencing from the virus itself, check out the early signs you have COVID, according to Johns Hopkins.

Among participants in the Johnson & Johnson trial who received a low dose of the vaccine, almost 45 percent of those aged 18 to 55 and almost 30 percent of those 65 and older reported fatigue as a side effect. For those aged 18 to 55 who received the highest dose, about 70% experienced fatigue. And for people 65 and over with a high dose, 40% had this reaction. And for more on fatigue, know that if you feel tired after this, you may have had COVID.

For the Johnson & Johnson study subjects aged 18 to 55, around 45% in the low-dose group reported having a headache and 70% in the high-dose group felt the same. A headache was less common among those 65 and older. For those in this age group who received a low dose of the Johnson & Johnson vaccine, only about 25% had this side effect, and it was reported by almost 35% of those who received a high dose. And for more up-to-date information, sign up for our daily newsletter.

Muscle pain, also known as myalgia, has been reported by 40% of people aged 18 to 55 who received only a low dose of the Johnson & Johnson vaccine. For people 65 years and older who received a low dose, 20% reported myalgia. As for those who received the highest dose, around 60% of 18-55 year olds reported this side effect, and 25% of those 65 and older suffered from it as well. And for more coronavirus concerns, find out why this COVID protective measure “isn’t working,” the doctor warns.

Of the three local adverse events studied – rash, pain, and swelling – only pain appeared to be a common reaction among participants in the Johnson & Johnson vaccine trial. For those 18 to 55 years old, nearly 65% ​​of those who received a low dose reported pain at the injection site and about 75% of those who received a high dose did so too. And among those 65 and older, 40% of those who received the low dose and the high dose had pain at the injection site. And to learn more about the pandemic, take a look at 3 things that could prevent almost all cases of COVID, study finds.