In an exploratory analysis, participants vaccinated in the follicular phase also went on average 35 days longer before a subsequent infection, though this was an unadjusted comparison and should be interpreted cautiously.
We used cycle data from 1,474 @clue users to investigate whether menstrual cycle phase influences COVID-19 vaccine outcomes.
Key finding: participants vaccinated in the follicular phase had 35% higher odds of reporting side effects compared to those in the luteal phase.
Huge thanks to supervisors Alex Alvergne, Rebecca Sear & Sarah Walters, co-authors, and Clue and their users 🙏 Early open access paper below 👇
Does it matter which day of your #menstrualcycle you get #vaccinated? 💉 My first PhD paper, just published in #npj Women's Health, suggests it might. 🧵
We've known for a long time that immune function fluctuates across the menstrual cycle. Yet this is one of the first studies to ask whether that matters for how you respond to a vaccine.
Poppy Cooper
Poppy Cooper
Poppy Cooper
Poppy Cooper
Poppy Cooper
Poppy Cooper
Very cool - a study led by @lshtm.bsky.social PhD student shows women vaccinated for COVID during follicular phase had 35% ⬆️ odds of reported side effects vs vaccinated in luteal phase
Growing research suggests the menstrual cycle may influence immune responses to 💉
idp.nature.com/authorize?re...
