National Advisory Committee on Immunization has updated its guidance on vaccination priorities to include adults from racialized communities disproportionately affected by the COVID-19 pandemic, and all essential workers, in the second stage of the vaccination campaign. ‘Imperative’ COVID-19 vaccines prioritized for homeless, shelter staff, advocates say The second stage is expected to start this spring after provinces get COVID-19 vaccines into the arms of all the staff and residents of long-term care homes, adults aged 70 or older, front-line health workers and adults in Indigenous communities.The committee added a third stage to its immunization recommendations that includes people between 16 and 59 years old with underlying.