Home News The second COVID vaccine dose tends to come back with extra unwanted effects. This is why you should not skip it
News - April 4, 2021

The second COVID vaccine dose tends to come back with extra unwanted effects. This is why you should not skip it



(NEXSTAR) – It’s broadly recognized that the second dose of the Pfizer and Moderna COVID-19 vaccines include extra unwanted effects, together with headache, fever and chills.

Even then, you shouldn’t skip it, says Dr. Anne Liu, an infectious illness doctor at Stanford College.

“For the two-dose vaccines, we all know that the primary dose is a minimum of partially protecting and doubtless considerably so, however we solely have knowledge for the quick time period — a month or two from receiving the vaccine,” Liu mentioned.

“We don’t actually know what occurs after that. It’s potential you want the second dose to create a longer-lasting impact.”

Variants pose a “theoretical concern” as effectively. It’s been hypothesized that receiving only one dose of the two-shot vaccines might enhance the prospect for a variant to come up, however that is simply hypothetical in the intervening time, Liu mentioned.

“I don’t assume we’re seeing [the rise of variants from single doses] a lot but,” Liu mentioned. “We’ll see as virus instances return up if that’s the case.”

“The vaccines weren’t studied in a one-dose regiment, so we don’t actually know but,” she added. “However I’m nervous about it.”

If somebody is frightened of experiencing second-dose signs, Liu recommends in search of out the single-dose Johnson & Johnson vaccine, which has fewer reported unwanted effects.

Why do some folks expertise extra unwanted effects from the vaccine than others? 

We don’t fairly know, Liu says. 

What we do know are developments, and usually, ladies and youthful folks are likely to report a better depth of unwanted effects than older and male people.

“That’s to not say they’ve extra signs, nonetheless,” Liu mentioned. It’s potential that youthful people and ladies simply report their signs with extra frequency. 

“I’m going to make an enormous generalization right here, however our tradition usually discourages males from bringing their signs to consideration,” Liu mentioned.

As for why youthful folks expertise extra signs, that may very well be a results of them having stronger immune techniques. 

“Older folks’s immune techniques are likely to get weaker over time,” Liu defined, that means their response to the vaccine can be much less intense. 

“When you have no unwanted effects, you’ll have a weaker response,” Liu mentioned.

That’s to not say the vaccine isn’t working. The immune system is advanced and multi-pronged, and unwanted effects aren’t the one signal the vaccine is efficacious. 

“General, the vaccines are very efficient in all teams studied,” Liu mentioned.

Each the Pfizer and Moderna vaccines are about 95-percent efficient at stopping COVID-19 an infection, the drug makers have mentioned.



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