Strengths & Limitations
The study was the first of its kind in India, conducted on a large
sample to investigate the impact of two vaccines approved for use in
India on the menstrual cycle pattern in reproductive-age women.
The major drawback of the study was, it failed to compare vaccinated
with unvaccinated women as by the time it started the majority of
females were either partially or fully vaccinated. In the future, we may
plan to conduct a long-term follow-up of women reporting changes in
their menstrual cycle after vaccination or COVID-19 infection to know
for how long these irregularities lasted and to establish the
cause-effect relationship with the vaccination.