A study published last week and conducted by the Norwegian Institute of Public Health has unveiled an association between COVID-19 vaccination and unexpected vaginal bleeding in nonmenstruating women.
The study, published in Science Advances, meticulously examined self-reported incidents of unexpected vaginal bleeding across different cohorts over a span of 8 to 9 months, amid the ongoing pandemic.
The researchers focused on data from 7,725 postmenopausal women, 7,148 perimenopausal women, and 7,052 premenopausal women.
Among these groups, 3.3%, 14.1%, and 13.1% reported “unexpected vaginal bleeding” during the study period, respectively.
Notably, the postmenopausal women experienced a two- to threefold increase in the risk of unexpected vaginal bleeding, termed as postmenopausal bleeding, in the 4 weeks following COVID-19 vaccination, as compared to a pre-vaccination period.
Furthermore, the risk of unexpected vaginal bleeding post-vaccination soared three- to fivefold in both nonmenstruating peri- and premenopausal women.
For premenopausal women, the Spikevax vaccine was notably associated with a 32% increased risk when compared to the Comirnaty vaccine.
The study highlighted that a significant portion of the female population does not menstruate due to the use of long-term hormonal contraception.
While altered bleeding patterns post-COVID vaccination have been a topic of discussion among menstruating women, few studies have ventured into exploring such experiences in women who do not menstruate due to hormonal contraception.
In the autumn of 2021, the Norwegian researchers incorporated questions concerning bleeding disturbances and unexpected vaginal bleeding in questionnaires distributed to various ongoing Norwegian cohorts, aiming to gather firsthand insights from participants following the introduction of the vaccine.
The research utilized questionnaire data from almost 22,000 participants of the Norwegian Mother, Father, and Child Study (MoBa) and the Senior cohort, investigating the potential correlation between COVID-19 vaccines and unexpected vaginal bleeding.
The publication stresses that the findings “must be confirmed in future studies”, indicating a stepping stone toward a deeper understanding of the impacts of COVID-19 vaccination on different segments of the female population.
The findings from this study shed light on a lesser-explored aspect of COVID-19 vaccination, urging the scientific community to delve deeper into understanding the full spectrum of vaccine-induced effects across diverse demographic groups.
Read the full study below:
Meanwhile, a new NBC News poll has revealed just 36% of registered Republican voters who received a COVID jab say it was worth it, while 57% say it was not.
“While more than half of Republicans who received a Covid-19 vaccine believe it wasn’t worth it, that sentiment was shared by just 29% of independents and 5% of Democrats who say they are vaccinated,” NBC reported on Friday.