Why the world won't go back to 'some sense of normal' until all countries are vaccinated against COVID-19

As countries such as Canada and the United States continue vaccinating millions of citizens, global health experts warn the pandemic could keep raging if lower-income nations don't get their share of much-needed doses.

source https://www.cbc.ca/news/health/vaccine-inequity-low-income-countries-1.5882960?cmp=rss