- HealthWatch: Unvaccinated can pose a threat to vaccinated peers, according to WJZ study
- Study finds increased risk of COVID-19 infection caused by mixing with unvaccinated people CP24 Toronto Breaking News
- Unvaccinated disproportionately risk safety of vaccinated against COVID-19, study The Globe and Mail
- COVID-19 Live Updates: Calgary Herald News on April 25 Calgary Herald
- See full coverage in Google News
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