Patterns of SARS-CoV-2 seropositivity among essential workers in long term care and retirement homes in Ontario, Canada: A descriptive cross-sectional study Post author By Wellness Hub Post date 30 July 2025 https://doi.org/10.1371/journal.pgph.0004294Patterns of SARS-CoV-2 seropositivity among essential workers in long term care and retirement homes in Ontario, Canada A descriptive cross-sectional studyDownload ← Implementation at a Glance