Aiva Jasilioniene

Aiva Jasilioniene is a Research Scientist at the Max Planck Institute for Demographic Research (MPIDR), affiliated with the Laboratory of Demographic Data. Her work is central to major demographic data initiatives, particularly the Human Fertility Database and Human Fertility Collection, which provide standardized fertility data across countries.

Her research focuses on fertility trends, union formation, marriage, divorce, and the impact of socioeconomic and health crises—particularly the COVID-19 pandemic—on reproductive behavior. She has extensively studied fertility patterns in Eastern Europe, Russia, and Lithuania, contributing to the understanding of lowest-low fertility and potential recovery pathways.

The recent articles highlight a strong focus on the demographic consequences of the pandemic, including fertility fluctuations, vaccination impacts, and regional variations in birth trends. Her methodological contributions include R packages for fertility table production and detailed documentation for international fertility databases.

• Association between the COVID-19 vaccination campaign and fertility trends (2025)
• Pandemic roller-coaster? Birth trends during the pandemic (2023)
• Partnership context of first births in Russia (2022)
• Educational differences in cohort fertility in Europe (2021)
• Retraditionalization and baby boom in Eastern Europe (2019)

Scientific Awards:

• No awards mentioned in the text.

She has collaborated widely with leading demographers across Europe and the U.S. on projects involving cohort fertility, union formation, and pandemic-related fertility changes. Her work is instrumental in data infrastructure development, supporting reproducible demographic research. She advises on data protocols and documentation but no formal students are listed. She is actively contributing to ongoing research with no indication of retirement or reduced status.