A higher-than-expected number of young men have experienced heart inflammation after their second dose of the mRNA COVID-19 shots from Pfizer/BioNTech and Moderna, according to data from two vaccine safety monitoring systems, the U.S. Centers for Disease Control and Prevention (CDC) said on Thursday.
The CDC and other health regulators have been investigating heart inflammation cases after Israel’s Health Ministry reported that it had found a likely link to the condition in young men who received Pfizer’s COVID-19 vaccine.
The agency said it is still assessing the risk from the condition and has not yet concluded that there was a causal relationship between the vaccines and cases of myocarditis or pericarditis.
While some patients required hospitalization, most have fully recovered from their symptoms, the CDC said.
More than half of the cases reported to the U.S. Vaccine Adverse Event Reporting System (VAERS) after people had received their second dose of either the Pfizer/BioNTech or Moderna vaccines were in people between the ages of 12 and 24, the CDC said. Those age groups accounted for less than 9% of doses administered.
“We clearly have an imbalance there,” Dr. Tom Shimabukuro, deputy director of the CDC’s Immunization Safety Office, said in a presentation to an advisory committee to the U.S. Food and Drug Administration meeting on Thursday.
The overwhelming majority of the cases have occurred within a week of vaccination, Shimabukuro said.
There were 283 observed cases of heart inflammation after the second vaccine dose in those aged 16 to 24 in the VAERS data. That compares with expectations of 10-to-102 cases for that age range based on U.S. population background incidence rates, the CDC said.
Shimabukuro said there was a predominance of males in younger age groups among the reported heart inflammation cases.
The median age of patients who experienced the inflammation after a second vaccine dose was 24, according to the VAERS data. Just under 80% of the cases were in men.
Shimabukuro also said the Vaccine Safety Datalink (VSD) – another safety monitoring system – showed an increased incidence of heart inflammation in 16 to 39 year olds after their second shot when compared to the rate observed after the first dose.
Pfizer said it supports the CDC’s assessment of the heart inflammation cases, noting that “the number of reports is small given the number of doses administered.”
The rare lung disease is so complicated that its acronym is difficult to pronounce. However, for infants who were unfortunate enough to be born with this disorder, the outcome is generally fatal. Left: normal [...]
Researchers analyzed data on three variants of concern and found that viral loads were higher and infection lasted longer for the B.1.1.7 variant. They all were more infectious than the original strain, and transmissibility [...]
A higher-than-expected number of young men have experienced heart inflammation after their second dose of the mRNA COVID-19 shots from Pfizer/BioNTech and Moderna, according to data from two vaccine safety monitoring systems, the U.S. [...]
Probably you’ve heard about hacking smartphones, emails, cards, computers. Even hacking elections. But what about hacking your body? What?! This concept is called biohacking and it’s really all about self-improvement. The possibilities are endless, all around [...]
Over the course of the coronavirus pandemic, various conspiracy theories surrounding the COVID-19 vaccine have arisen, with one of the most popular pieces of false information being that the shots contain microchips. Now, scientists [...]
COVID-19 continues to claim lives around the world and is infecting millions more. Although several vaccines have recently become available, making significant strides towards preventing COVID-19, what about the treatment of those who already [...]
People who have received the Pfizer vaccine have lower antibody levels that target the Delta variant, first discovered in India, than those that targeted previously circulating variants in the UK, new data suggests. The study found that [...]
Medical researchers with the Chinese army engineered mice with humanized lungs in 2019 to test viruses on them, it has been reported. The mice, developed using CRISPR gene-editing technology, were mentioned in an April 2020 study which researched [...]
Healthcare systems across Africa are “far from ready” to cope with a fresh surge of coronavirus infections, with vaccine deliveries at a near standstill and cases surging in many countries, the World Health Organization [...]
All viruses, including SARS-CoV-2, the virus that causes COVID-19, change over time. Most changes have little to no impact on the virus’ properties. However, some changes may affect the virus’s properties, such as how easily it spreads, the associated disease severity, or [...]
Vaccines can be great at preventing you from getting sick, while at the same time not necessarily stopping you from getting infected or spreading the germ. Preliminary evidence seems to suggest the COVID-19 vaccines [...]
People who recover from mild COVID-19 have bone-marrow cells that can churn out antibodies for decades, although viral variants could dampen some of the protection they offer. Many people who have been infected with [...]
British spies believe that the thesis that COVID-19 leaked from a lab in China is plausible and are seeking to recruit sources on the darknet as they investigate the claim, reported The Sunday Times. Sources [...]
A team of German scientists believe that they have worked out why some people given the AstraZeneca and Johnson & Johnson vaccines against Covid-19 develop blood clots – and claim they can tell the manufacturers how to improve [...]
The United States is closer than ever to beating Covid-19, with half the country vaccinated and more restrictions lifting. But we're as far as ever from knowing how this virus, which shut down the world, [...]