A health official says two patients at Calgary's Foothills hospital have died from the Delta variant of COVID-19 - and one had been fully immunized.
He said a total of 4,828 case of Covid-19 have been reported over the last 14 days - 83.5% of cases are in those under the age of 45, 6% are over 55, and 2% are over 65.
It also pointed to its previous findings that two doses of a COVID vaccine gives a "high degree of protection" against hospitalisation from the Delta variant.More news: Israel military confirms airstrikes on Gaza
Earlier, The World Health Organisation (WHO) termed the Delta variant as a "variant of concern" (VOC) and said it is more powerful than the Alpha variant that has lineage B.1.1.7.
The Delta variant now accounts for nearly all of the UK's coronavirus cases, according to Public Health England.
"The vaccination programme and the care that we are all taking to follow the guidance are continuing to save lives".More news: Bidens to have tea with Queen Elizabeth as G7 ends
The case fatality rate remains low for Delta. Please make sure that you come forward to receive both doses of the vaccine as soon as you are eligible.
According to the latest data, it has spread to 356 confirmed cases, with more than 300 in the Calgary health zone.
"While we know that people can catch viruses a couple of times, this data now suggests that the rate of COVID-19 reinfection is low", said Dr Susan Hopkins, Strategic Director for COVID-19 at PHE.
"I certainly think that they ought to, that's definitely our position here, but there is a very big step taken when you move into compulsion".More news: Omar tweet faces pushback from Democrats
United Kingdom has delayed steps to lift restrictions by a month.