key: cord-0079082-iaew8mv1 authors: Sookaromdee, Pathum; Wiwanitkit, Viroj title: Tachycardia, adverse effect, COVID-19 vaccine: correspondence date: 2022-05-26 journal: Enferm Infecc Microbiol Clin DOI: 10.1016/j.eimc.2022.05.004 sha: 458e3f937f09e0bb38f83b439bf95f0b643be0e0 doc_id: 79082 cord_uid: iaew8mv1 nan . Furthermore, we must consider the possibility that the problem is caused by a coexisting medical condition. A COVID-19 vaccine recipient, for example, can contract dengue fever and develop tachycardia [2] . Before disclosing any new suspected side effect of the COVID-19 vaccination, it is customarily necessary to conduct a thorough examination for confirmation. Tachycardia as an undescribed adverse effect to the Comirnaty© vaccine (BNT162b2 Pfizer-BioNTech Covid-19 vaccine): Description of 3 cases with a history of SARS-CoV-2 disease Dengue After COVID-19 Vaccination: Possible and Might be Missed