November 28, 2022

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US and Chinese researchers: mRNA-based COVID-19 vaccines increase risk of developing myocarditis or pericarditis

Chest pain Source: Pixabay


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Scientists in the United States and China say COVID-19 vaccines based on mRNA increase the risk of developing myocarditis or pericarditis in people under the age of 40. But so that some imaginary “vaccinations” are not accused, at the same time the same experts urge vaccinations because, as they say, infection with the Corona virus is more dangerous, and complications after the vaccine are rare. naturally…

Based on an extensive analysis of research, researchers from St. Joseph’s Hospital-Chicago together with colleagues from China have confirmed the effect of mRNA-based vaccination against COVID-19 on heart disease risk in people under the age of 40.

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Dr Chenyu Sun, lead author of the study, said: “Our study looks at data to identify people who may be at increased risk of developing myocarditis or pericarditis after vaccination against COVID-19, and confirms rare cases of adverse reactions in adults under the age of 40 years. “. It was described in the American Journal of Preventive Medicine.

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Compared to unvaccinated people The risk of developing one of the disorders increased by 33%. after the first dose and was approximately three times higher after the second dosecompared to not being vaccinated. The increased risk was particularly associated with myocarditis.

Researchers explain that myocarditis can manifest as chest pain, fever, congestive heart failure, or an irregular heartbeat. It can lead to death. Pericarditis usually causes severe pain in the chest – behind the sternum.

Both conditions are thought to be caused by autoinflammation linked to the immune system’s response to the virus.

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Most people, despite new information, recommend vaccinations.

“If myocarditis or pericarditis develops after a COVID-19 vaccination, symptoms are usually less severe and largely resolved compared to other conditions. As a physician, I highly recommend COVID-19 vaccination, unless there are clear contraindications, such as Known allergy. Benefits and risks must be carefully weighed to appropriately treat at-risk patients,” emphasizes Dr. Sun.

Researchers remember that reports of this rare and serious complication caused confusion among the public and clinicians alike.

“By examining the link between vaccination against COVID-19 and myocarditis or pericarditis with the help of a systematic review and meta-analysis of available studies, we hope to clarify risks and help clinicians and public health decision-makers develop a safer vaccination strategy for at-risk groups.” Dr. Linya Feng from Anhui Medical University in China says.

“Vaccinations are one of the most important ways we must fight COVID-19. Different strategies can be developed with different doses and types of vaccination to better suit a particular population.

The exact mechanism by which vaccines affect the risk of these disorders is not well understood.

In their project, the scientists reviewed a thousand studies, from which, through careful selection, they selected the 11 best, with the participation of up to 58 million people. Eight of them compared disease risks before and after vaccination, and three of them examined the effect of different doses.

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