Yiyi Xu, PhD

Associate Professor
School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden

Poster(s):

• (SLC-056) COVID-19 vaccine effectiveness against Post COVID-19 condition among 1,292,557 individuals with pre-existing immunity against SARS-CoV-2: a population-based cohort study.
  Tuesday, August 26, 2025

  12:15 PM - 1:15 PM ET

• (A-336) Regional differences in COVID-19 vaccine uptake and their determinants among Swedish older adults
  Sunday, August 24, 2025

  12:00 PM - 1:30 PM ET

• (SLB-064) Risk factors associated with post-COVID-19 condition among 810,851 individuals in Sweden: population-based cohort study
  Monday, August 25, 2025

  11:45 AM - 12:45 PM ET