A Swedish study found no association between flu vaccination during pregnancy and autism spectrum disorder in children – regardless of when vaccinated.
If, on the other hand, pregnant women get flu, the probability of a severe course is high. This in turn increases the risk of stillbirth and premature birth.
Another study that included a total of 57 vaccines showed that “almost no significant side effects were found”.
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A comprehensive new study, now published in the Annals of Internal Medicine, found no association between flu vaccination during pregnancy and autism spectrum disorder in children.
In the study, scientists tracked nearly 70,000 toddlers born between October 2009 and September 2010 in seven regions of Sweden. About 40,000 of them had their mother vaccinated with the influenza A (H1 N1) vaccine during pregnancy.
The researchers at the Karolinska Institute in Stockholm followed the development of all children after birth for an average of 6.7 years. They found that 1 percent of those whose mothers got the vaccine and 1.1 percent of those whose mothers didn’t get the vaccine later had an autism spectrum disorder – that’s not a significant difference.
Autism has a strong genetic component
The time of vaccination also had no influence on the risk of autism in the long-term study. Getting vaccinated in the first trimester was not associated with a higher risk of autism than receiving the vaccine later in pregnancy. An earlier study, on the other hand, had found a slightly increased risk of vaccination in the first trimester.
The results of the current study are not surprising for Anders Hviid. He is an epidemiologist at the University of Copenhagen and was not involved in the study, but wrote an accompanying editorial.
“We know that autism has a strong genetic component and that no credible science supports the view that vaccines given in pregnancy (or in childhood) can cause autism,” he wrote.
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Influenza vaccines during pregnancy protect the health of both mother and child
If pregnant women get the flu themselves, they are more likely to have a severe course, putting them at higher risk of stillbirth and premature birth.
While previous studies have shown that flu vaccines protect both women and babies during pregnancy, few have researched the longer-term risks.
A great investigation from 2017 for example, showed no connection between flu vaccines for mothers and an increased risk of ASA, but she not only looked at H1N1 vaccines like the current study.
“This new study provides additional assurance that maternal H1N1 alone is not associated with an increased risk of AIDS or Alzheimer’s in their children,” said Ousseny Zerbo, researcher at Kaiser Permanente in Northern California and author of the 2017 study.
Vaccinations are safer than “almost any other modern medical intervention”
Many people are unsure how safe vaccinations are overall and how certain vaccinations are in particular. The current corona pandemic has exacerbated these questions insofar as a possible vaccine will be tested when it comes on the market, but experience with it is still limited.
However, a study carried out in August that spanned 20 years and included a total of 57 vaccines showed that “almost no significant side effects were found”, which was “remarkable” according to medical doctor Daniel Shepshelovich of Tel-Aviv University.
Medical devices and pharmaceuticals don’t have this track record. “I would tell people interested in vaccinations that the science and evidence of vaccine safety is clearer than almost any other modern medical intervention,” Shepshelovich said. “The advantages are enormous. And the risk is very, very small. “
This text has been translated from English. You can find the original article here.
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