Dear Editor,

We would like to share ideas on “Vaccine-Induced Myocarditis in Two Intern Doctors in the Same Night Shift.” ^{Reference Canakci, Sevik, Dereli, Mert and Acar1} After receiving the first doses of BNT162b2 vaccine (Pfizer-BioNTech’s [New York USA] coronavirus disease 2019 [COVID-19] vaccine), Canakci, et al documented two cases of vaccine-induced myocarditis in medical students. Both of these patients—young men with no prior medical history—had a satisfactory post-disease recovery. ^{Reference Canakci, Sevik, Dereli, Mert and Acar1} We both concur that the COVID-19 infection and the vaccine might be related. We are all worried that the COVID-19 immunization could be harmful even though it is useful. Due to a lack of pre-vaccination data on the health and immunological status of vaccine recipients, it is impossible to determine what caused the hematologic issue in this case. Due to contradicting information, the populace may become disheartened and rebel against vaccinations. The problem could be brought on by a patient comorbidity. ^{Reference Kebayoon and Wiwanitkit2} Although the patient’s clinical condition after vaccination was obvious, this did not rule out the possibility of other co-morbid illnesses.