Has the virus infected a large number of young children?

“There are too many unknowns about this when the vaccine is known – it’s my caution,” said Dr. Peter Chin-Hong, an infectious disease exp...


“There are too many unknowns about this when the vaccine is known – it’s my caution,” said Dr. Peter Chin-Hong, an infectious disease expert at the University of California, San Francisco. “Certainly, I wouldn’t put all of my eggs in the previous infection, the basket of natural immunity.”

As with the protection conferred by vaccines, immunity against natural infection may weaken over time, leaving children vulnerable to reinfection. “I would be interested to know when this infection took place,” said Dr Chin-Hong. “If it was about a year ago, then I would be worried about the decrease in immunity. “

What to know about Covid-19 booster injections

The FDA has cleared booster shots for millions of drug recipients Pfizer-BioNTech, Moderna and Johnson & johnson vaccines. Pfizer and Moderna beneficiaries who are eligible for a recall include people 65 years of age and older and young adults at high risk of severe Covid-19 due to medical conditions or their workplace. Eligible Pfizer and Moderna beneficiaries may receive a booster at least six months after their second dose. All Johnson & Johnson recipients will be eligible for a second injection at least two months after the first.

Yes. The FDA has updated its clearances to allow medical providers to boost people with a different vaccine than the one they originally received, a strategy known as “mix and match.” Whether you have received Moderna, Johnson & Johnson, or Pfizer-BioNTech, you may receive a booster of any other vaccine. Regulators have not recommended any vaccine over another as a booster. They have also remained silent on whether it is better to stick to the same vaccine when possible.

The CDC said the conditions that qualify a person for a booster shot include: hypertension and heart disease; diabetes or obesity; cancer or blood disorders; weakened immune system; chronic lung, kidney or liver disease; dementia and some disabilities. Pregnant women and current and former smokers are also eligible.

The FDA has cleared the boosters for workers whose work puts them at high risk of exposure to potentially infectious people. The CDC says this group includes: emergency medical workers; education workers; food and agricultural workers; manufacturing workers; correctional workers; workers in the US postal service; public transport workers; employees of grocery stores.

Yes. The CDC says the Covid vaccine can be given regardless of the timing of other vaccines, and many pharmacy sites allow people to schedule a flu shot along with a booster dose.

In adults, natural immunity “seems to generally hold up well,” said Dr Bhattacharya.

But it’s not clear whether the protection seen in adults extends to children, in part because most children tend to have milder symptoms than adults and may not have developed. full defense against the virus.

Natural immunity in children may also not resist the variants. Several studies have shown that a single dose of the vaccine in an already infected adult can increase protection, even against variants like Beta and Delta.

“I suspect this will be the case for children as well,” said Dr Hensley.

Vaccination should also reduce the chances of a re-infected child transmitting the virus to others who may contract serious illness. “If someone in your household is extremely vulnerable, then the consequences are quite serious,” said Dr Bhattacharya.

All the evidence so far indicates that vaccines are much safer than a bout of Covid, even for children.

For example, although vaccines have been linked to the rare risk of myocarditis, inflammation of the heart, in young men, symptoms quickly disappeared in most of them. Covid is much more likely to cause myocarditis, and a much more severe version.

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