A study found that there is a relationship between COVID-19 vaccination and adverse events such as abnormal uterine bleeding due to frequent menstruation and cerebral venous sinus thrombosis caused by thrombus coagulation.
On the 11th, the Corona 19 Vaccine Safety Committee (Chairman Byeong-joo Park) of the National Academy of Medicine of the Republic of Korea held a presentation on the results of the 3rd study that analyzed adverse reactions after vaccination against COVID-19.
The committee found that vaccinated women had a statistically significant increase in the risk of abnormal uterine bleeding (menstrual adverse reaction) (excluding amenorrhea and delayed menstrual cycle). Abnormal uterine bleeding is when menstruation appears irregularly outside of the normal cycle, or the amount of bleeding exceeds the normal range even if the menstrual cycle is maintained.
The committee’s analysis showed that the incidence of abnormal intrauterine bleeding increased statistically after vaccination regardless of the type of vaccine.
In addition, the committee analyzed data from domestic health authorities and found that the incidence of cerebral venous sinus thrombosis increased after being vaccinated against COVID-19. In particular, significant increases in risk were found in women aged 30-49 and 50-64, respectively, the committee said.
Cerebral venous sinus thrombosis is a disease in which blood from the brain cannot be transported well to the heart because the cerebral veins are blocked by clotting of blood clots. A large amount of blood is stored in the brain tissue, leading to cerebral hemorrhage and cerebral edema.
In addition, the committee said that a detailed epidemiological evaluation will be carried out further for deep vein thrombosis and pulmonary embolism after Pfizer vaccination.
Meanwhile, the National Academy of Medicine of the Republic of Korea established the COVID-19 Vaccine Safety Committee on November 12, 2021 with the aim of evaluating the scientific causality of adverse reactions after vaccination against COVID-19, and announced the research results three times including this one.
By Kim Yong-joo, reporter [email protected]
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