Lisa Zeltzer watched COVID-19 case numbers rise through the winter and worried the March trip she'd booked to New York City — a vacation her theatre-loving son has been waiting to take for two years — would be cancelled.

Known as Covifenz, the vaccine was developed by Medicago, a biotechnology company based in Quebec City that uses a plant host to make virus−like particles which help the body’s immune system make antibodies.  

Saskatchewan residents also started the day with relaxed measures as the province lifted its proof of vaccine or a negative test requirement to enter most businesses as of midnight.

Forty-three per cent of Canadians surveyed by Leger identified their feelings about the current state of the pandemic as "prudent" — the most popular answer of four options — saying they did not want to lift restrictions too quickly.

The prime minister announced his positive test result on Twitter earlier in the day, adding he would keep working remotely this week as he follows public health guidelines. He also encouraged everyone to "please get vaccinated and get boosted."

A study on indoor air quality and housing characteristics in isolated First Nations communities found elevated rates of respiratory infections and wheezing in young children, which authors associate with poor conditions within their homes. 

Provinces are putting new measures in place to deal with an Omicron-fuelled rise in COVID-19 cases and hospitalizations, including delaying in-person schooling in Ontario by two weeks and bringing in the military to help Quebec speed up its third-dose vaccination program.

Some provinces announced new measures for long-term care homes as others reported record-breaking COVID-19 infections propelled by the highly contagious Omicron variant.

Canada has recorded its 30,000th COVID-19 death since the pandemic began in early 2020, surpassing a grim milestone just as the country braces for the potential fallout of surging infections driven by the Omicron variant.

Low-lying areas of major cities like Vancouver and Montreal could become inundated with floods in the next 80 years under various climate change scenarios, suggests a floodplains map developed by a Western University researcher.