Thai vaccine study

Cardiovascular Effects of the BNT162b2 mRNA COVID-19 Vaccine in Adolescents

Study focuses on cardiovascular effects,

particularly myocarditis and pericarditis events,

after BNT162b2 mRNA COVID-19 vaccine injection,

in Thai adolescents, 13 to 18, both sexes

This prospective cohort study,

students from two schools aged 13–18 years,

who received the second dose of the BNT162b2 vaccine.

All healthy and without any abnormal symptoms before receiving the second dose of vaccine.

Data collected



Vital signs

ECG, echocardiography

Cardiac enzymes


at baseline, Day 3, Day 7, and Day 14

N = 314

Analysis, n = 301

Cardiovascular effects

Found in 29.24% of patients,

ranging from tachycardia, palpitation, and myopericarditis.

Most common cardiovascular effects

Tachycardia, 7.64%

Shortness of breath, 6.64%

Palpitation, 4.32%

Chest pain, 4.32%

Hypertension, 3.99%

Abnormal ECG finding, 54 patients (17.94%)

Seven participants (2.33%)

(all male)

At least one elevated cardiac biomarker or positive lab assessments


Confirmed in one patient after vaccination.

Two patients had suspected pericarditis

Four patients had suspected subclinical myocarditis

Three patients had minimal pericardial effusion

Myocarditis and Sudden Cardiac Death in the Young

Myocarditis accounts for up to 20% of sudden cardiac deaths in young adults.

During the follow-up period, (14 days)

After receiving the second dose of vaccine,

two patients were hospitalized,

one patient was supervised in the ICU during hospitalization,

(mainly for observation of arrhythmia).


The clinical presentation of myopericarditis after vaccination was usually mild, with all cases fully recovering within 14 days.

Hence, adolescents receiving mRNA vaccines should be monitored for side effects.

Clinical Trial Registration: NCT05288231

Incidence, risk factors, natural history, and hypothesised mechanisms of myocarditis and pericarditis following covid-19 vaccination: living evidence syntheses and review

Male adolescents and male young adults are at the highest risk of myocarditis after an mRNA vaccination.

Vaccines for COVID-19

COVID-19 vaccines are safe, effective, and free.

COVID-19 Vaccines for Children and Teens

CDC recommends covid -19 vaccines for everyone 6 months and older and boosters for everyone 5 years and older,

Written by Dr. John Campbell

Hello Everyone,My name is John Campbell and I am a retired Nurse Teacher and A and E nurse based in England. I also do some teaching in Asia and Africa when time permits. These videos are to help students to learn the background to all forms of health care. My PhD focused on the development of open learning resources for nurses nationally and internationally.


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  1. Vaccines are not free, we all pay for them. So many lies.💉💉💉💉💉💲💲💲👨‍👨‍👦🐍❤️🍁🍁🍁🇨🇦🇨🇦🇨🇦

  2. For those of you living in the USA where your military recruits receive the smallpox vaccination I suggest you research into the side effects of that vaccine, which include myocarditis and pericarditis.

  3. That must have being after taking Ivermectin, given NZ director generals warnings, about Ivermectin, you must have got using Ivermectin to protect against Covid mixed up with getting the Pfizer shots John. Or at least they have in Thailand.

  4. It's not bizarre Dr. John, it's criminal. No testing, no studies, nothing on vaccine injuries. I'll never take another vx in my life. I hate western medicine's lack of science! The FDA, CDC, WHO are Corrupt!

  5. John you pushed these shots from day one. At least you are starting to wake up to what these shots are all about. I bet you are having trouble sleeping knowing what you now know.

  6. CDC reputation.. lolol..funny..all about the money and control im sad..thank u for being such an amazing the way if studies eventually get done here pfiser will be controlling them i much corruption but once again u da man john .lol…thank u

  7. You haven't done perspective studies because most westerners worship money…..and they'll happily see millions of people suffer if they can make a quick buck….i'm surprised cambell being in the industry for so long realizes a simple Truth so late!

  8. I checker the Thai media and, as I expected, found nothing on this CLAIMED study. The Thai command of the English language is not good, even in the highly educated medical profession. So, who did the translation of the long ALLEGED STUDY into English? And, who commissioned and funded the study? This is not the way things are done here.

    Check the dates of when this paper was submitted and published. Who has the money to bribe this 'Preprints' sight, if not the Russians?

    Campbell has again trashed his credibility by quickly pushing absurdly impossible antivaccine junk from Lieland.

  9. Australia went through the first year of the so called pandemic with 909 deaths ( at February 2021). Then they started the vaccination roll out. Australia has today 13,000 deaths. My question is: in what way these vaccine is "safe and effective? Where is the improvement? And how could they make mandatory if doesn't prevent transmission?

  10. To answer your question John, (in my opinion) … MONEY 💰….. I been to Thailand and there view on healthcare is different. However in Thailand you can get vastly superior health care as well as much worse health care. The West is much more consistent in being Mediocre.

  11. Although this is a good study, it will be disregarded by the USA. There is too much money at stake from both the standpoint of sales, and liability. They are pushing for additional age groups to receive billions worth of vaccines.

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