The study was conducted primarily by researchers from the Mahidol University in Bangkok, with the assistance of several other researchers from different hospitals in the capital. It studied 301 students from two schools, all between the ages of 13 and 18.
All of the students were partially vaccinated, having received a dose of Pfizer's mRNA COVID-19 vaccine. Forty-four of the participants had underlying health conditions, such as allergic rhinitis, asthma, G6PD deficiency and thalassemia trait. (Related: Study finds 29% of teenagers develop heart problems following second dose of Pfizer's mRNA COVID-19 vaccine.)
Researchers conducted laboratory tests to establish a baseline, and then followed up with the students at intervals of three, seven and 14 days after they receive the second dose of the COVID-19 vaccine.
The researchers found that 29.24 percent of the study participants – or 88 of the 301 students – experienced cardiovascular incidents following vaccination, including heart palpitations, chest pains, shortness of breath, tachycardia and myopericarditis.
Fifty-four students had abnormal electrocardiogram results. Six students experienced mitral valve prolapses. Another six had high blood pressure and seven were diagnosed with heart inflammation.
Two of the children had to be hospitalized, with one of them being admitted to an intensive care unit.
The conclusion of the researchers was particularly mild, considering the study's findings. They believe that, if adolescents have to be vaccinated, they should at least be monitored for side effects, especially if they receive the mRNA COVID-19 vaccines.
Medical professionals who reacted to the Thai study all believe that it provides more evidence proving that children should not be given COVID-19 vaccines.
"Any form of heart damage in young persons is concerning since the long-term risks of heart failure and sudden death with exercise are unknown," noted Dr. Peter McCullough, a cardiologist and the chief medical adviser for the Truth for Health Foundation. "This is one of [about] 200 published papers demonstrating the risks of COVID-19 vaccination far outweigh any theoretical benefit."
Dr. Anish Koka, another cardiologist, said the results of the new study "are not reassuring." He also criticized the study authors for characterizing some of the heart conditions the children experienced, such as myopericarditis, as "mild."
At the very least, Koka noted, the study "helps fill in some of the data void so parents and their doctors can be better informed when discussing the risks and benefits of the vaccines."
Del Bigtree and Jefferey Jaxen, on an episode of "The Highwire," noted that American public health institutions continue to ignore the evidence.
"Does someone want to actually put a pause button out and say, 'Hold on a second, this doesn't look so good?' They're literally ignoring that," said Bigtree.
"This is the state of science in the United States, and this is why we may be in some real trouble until this changes," said Jaxen. "
Learn more about the harmful effects of COVID-19 vaccines on VaccineInjuryNews.com.
Watch this clip from "The HighWire" as host Del Bigtree and investigative reporter Jefferey Jaxen discuss the latest study proving that the COVID-19 vaccines are dangerous for children's hearts.