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Coronavirus vaccines: Why are some nations recommending single dose for teenagers, younger adults?

Considerations of myocarditis, an irritation of the center, after a second COVID vaccine dose in teenagers and younger adults has sparked a number of nations to show to a single-dose vaccination tactic for that age group as a substitute of the double dosage, in response to a number of media shops.  

Officers in a number of nations, together with England, Norway and Hong Kong, have advisable administering a single dose of the Pfizer-BioNTech vaccine for kids ages 12 and older. The trouble is supposed to supply partial safety from the coronavirus whereas decreasing the chance of potential uncomfortable side effects, similar to myocarditis, an hostile response sometimes seen after a second dose of one of many mRNA vaccines on this age group, in response to multiple reports.  

Dr. Aaron Glatt, a spokesperson for the Infectious Ailments Society of America and professor and chair of medication at Mount Sinai South Nassau on Lengthy Island, New York, weighed in on the stories and informed Fox Information, “This new technique is actually worthwhile evaluating. It has theoretical and sensible benefits if it really works.” Glatt warned, “Nonetheless, the suitable full research to show that this must be the usual method stay to be carried out and analyzed.” 

Some countries have recommended giving children 12 and older a single dose of the Pfizer-BioNTech COVID-19 vaccine. (iStock)

Some nations have advisable giving kids 12 and older a single dose of the Pfizer-BioNTech COVID-19 vaccine. (iStock) (iStock)


Well being officers in Hong Kong advisable a single dose of the Pfizer-BioNTech vaccine for children ages 12-17 final month after stories of coronary heart irritation had been seen as a facet impact of the second dose of the mRNA vaccine, in response to a report by Reuters.  

Professor Lau Yu-lung, who chairs a panel of well being specialists advising Hong Kong authorities officers on their vaccination program, informed a neighborhood media outlet that well being specialists thought it was extra useful for youngsters to obtain just one dose to “vastly cut back the prospect of coronary heart irritation,” in response to Reuters.

England and Norway are additionally recommending the only dose of the Pfizer/BioNTech vaccine to kids ages 12-15 and can await a call on second doses till additional information is rolled out, in response to multiple reports.  

In keeping with the Centers for Disease Control and Prevention (CDC),  circumstances of myocarditis and pericarditis, an irritation of the liner of the center, occurred extra typically in male adolescents and younger adults after receiving a second dose than after the primary dose of the mRNA Covid-19 vaccine (Pfizer-BioNTech or Moderna).  

Those that reported having myocarditis or pericarditis responded properly to medication and recovered shortly, the CDC mentioned on its website.  

An announcement on the well being company web site famous, “These stories are uncommon and the identified and potential advantages of COVID-19 vaccination outweigh the identified and potential dangers, together with the possible risk of myocarditis or pericarditis.” 

A patient receives his vaccine. (iStock)

A affected person receives his vaccine. (iStock) (iStock)

Dr. Fred Davis, an affiliate chair of emergency medication at Northwell Well being in New York, informed Fox Information, “The CDC stories that myocarditis reporting charges had been 40.6 circumstances per million after the second doses of mRNA COVID-19 vaccines administered to males aged 12−29 years. That’s far lower than 1% on this group.” 

Davis, who makes a speciality of emergency medication, informed Fox Information that myocarditis stays a uncommon facet impact of the mRNA vaccine, and that if it does happen, “Most of those circumstances reply properly to anti-inflammatory medicine and relaxation. Most of those signs resolve in a single to 2 weeks.” 

Davis additionally commented on these nations that suggest the single-shot tactic and informed Fox Information, “Whereas the method to supply a single dose of vaccination for kids 12 and older will provide much less safety (52% with one dose vs 88% with two doses of Pfizer), this method permits extra kids to be vaccinated with variety of vaccines at hand whereas additionally decreasing the already minimal threat of uncomfortable side effects seen after the second dose.”  


Davis, who’s board licensed in emergency medication and an affiliate professor at the Donald and Barbara Zucker College of Medication at Hofstra/Northwell in Hempstead, New York, informed Fox Information, “This method of a single dose will hopefully encourage extra mother and father to comprehend the advantages vastly outweigh the dangers and get their kids vaccinated.”

In the meantime, Glatt, who can be a hospital epidemiologist, cautioned that “We additionally want to grasp that in adults, the information clearly present that two doses are wanted to get stronger immunity.” 


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