VIMKUNYA® Pregnancy registry: An Observational Prospective Study of the Safety of VIMKUNYA® Vaccine Exposure in Pregnant Women and their Offspring

01/10/2026
01/10/2026
EU PAS number:
EUPAS1000001126
Study
Ongoing
Study type

Study topic

Human medicinal product

Study type

Non-interventional study

Scope of the study

Evaluation of patient-reported outcomes
Safety study (incl. comparative)

Data collection methods

Primary data collection
Non-interventional study

Non-interventional study design

Cohort
Other

Non-interventional study design, other

Prospective pregnancy exposure registry with primary data collection. This is a Phase 4, non-interventional, product-exposure registry designed to actively collect pregnancy and infant outcome data among women exposed to VIMKUNYA up to 28 days before conception or during pregnancy
Study drug and medical condition

Medicinal product name

Anatomical Therapeutic Chemical (ATC) code

(J07BP02) chikungunya, virus-like particles
chikungunya, virus-like particles
Population studied

Short description of the study population

The study population will include women who received VIMKUNYA up to 28 days before conception or at any time during pregnancy and their offspring.

Age groups

  • In utero
  • Paediatric Population (< 18 years)
    • Neonate
      • Preterm newborn infants (0 – 27 days)
      • Term newborn infants (0 – 27 days)
    • Infants and toddlers (28 days – 23 months)
  • Adults (18 to < 46 years)

Special population of interest

Pregnant women

Estimated number of subjects

46
Study design details

Study design

Phase 4, noninterventional pregnancy registry with primary data collection over 5 years. Women are enrolled prospectively after VIMKUNYA exposure and before pregnancy outcome; retrospective reports are also collected. Pregnancy and infant outcomes are followed from enrolment to 1 year of age.

Main study objective

-To describe pregnancy outcomes among pregnant women who received CHKV VLP vaccine up to 28 days before conception or at any time during pregnancy.
-To describe neonatal/infant outcomes until 1 year of age among the offspring of pregnant women who received CHKV VLP vaccine up to 28 days before conception or at any time during pregnancy.

Data analysis plan

Descriptive statistics will be used to summarize the characteristics of the pregnancy registry study population. Frequencies and proportions will be calculated for categorical variables and means, standard deviations, medians, minimums, and maximums will be used for continuous variables. Cohort formation and attrition details will also be presented to characterize participant discontinuation (if any) throughout the study.
Missing data will not be imputed due to the limited sample size. Instead, the extent of missingness will be reported descriptively. All analyses will be conducted using SAS version 9.4 (or above).