‘Vaccinemakers did not show male-female ratio side effects’

Pharmaceuticals and researchers from five major coronavaccins did not split their published adverse reactions research data by sex. Partly because of this, it is unclear whether different side effects occur in men and women. That concludes Investico, a research platform with which Trouw, EenVandaag and De Groene Amsterdammer work together.

Investico reviewed all clinical trials of five coronavaccins – Pfizer/Biontech, Moderna, AstraZeneca, Sputnik V and Janssen – as published in scientific journals such as The Lancet and Nature. Not one of them reported adverse reactions to sex.

Women report bulk of side effects

Worldwide, more side effects of coronavaccins are reported by women than men. The latest figures show that 26,000 reports of a total of 152,000 adverse reactions have been received at the Dutch side effects centre Lareb. Of the detectors, 86.6 percent were female. Possibly because so far many young female health workers have been vaccinated, reports Investico.

โ€œ If women report more, we dont know whyโ€, says Lareb Director Agnes Kant to Investico. โ€œDo they experience more complaints, do they actually have complaints, do they call the bell earlier?โ€

According to Investico, serious side effects so far affect women. For example, the combination of thrombosis with a low number of platelets currently associated with the AstraZeneca vaccine. Of the five reports received by Lareb, they were women aged between 25 and 65.

Chahinda Ghossein, a cardiologist in training at Maastricht UMC, previously researched gender differences in coronavirus infection. It is a pity that the vaccine makers have not reported the difference in side effects between men and women. โ€œIt is important to know which groups are at higher risk for serious side effects. Then gender is quite clearly a feature to investigate.โ€