At least 49 active cases of COVID-19 have been linked to a wedding held earlier this month in Calgary.
It comes as Alberta hits its highest case numbers ever — 3,138 active cases, 998 of which are in Calgary.
The wedding featured a large number of Albertans from different households, Alberta Health spokesperson Tom McMillan said.
Aggressive contact tracing is underway to identify anyone who may have been exposed and ensure they are isolating and getting tested, and anyone at risk is being contacted directly by Alberta Health Services.
McMillan said Alberta Health can’t comment on specifics about individual cases due to patient confidentiality, but he did say it’s not yet clear what led to the level of exposure and that an investigation is underway.
Reminder that ‘this virus is still here’
Several recent outbreaks in Calgary have been linked to social gatherings, he said, adding that no one should attend a gathering if they have even mild symptoms or are awaiting test results.
“This is a reminder to all Albertans that this virus is still here and any social gathering carries a risk of exposure. This is true for both planned events, like wedding receptions, or informal get-togethers in a house or community space,” McMillan said.
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“It is also important that organizers of social gatherings do everything possible to comply with the public health guidance in place, including ensuring that there is enough space for physical distancing between cohorts, following gathering size restrictions and avoiding sharing food and utensils.”
Dr. Craig Jenne, an infectious disease expert with the University of Calgary, said based on the high transmission numbers, he would consider this event a “superspreader.”
“Although 49 cases may not seem like a huge number, we have to keep in mind that these people have perhaps had continual contact with others after the wedding … if each person passes [COVID-19] on to two, three, four other people, we may be looking at an event that has now led to 200, 300 or more cases in the community. And again, each of those cases has the potential to spread it further,” he said.
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“We also have to keep in mind that many of these gatherings … probably have a significant number of people that are in at-risk groups — older parents, grandparents.”
Dr. Joe Vipond, an ER physician in Calgary and a co-founder of the Masks4Canada advocacy group, said the incident demonstrates that Alberta’s rules on the size of gatherings are not good enough to stop the spread of the virus.
The rules state that indoor social gatherings cannot have more than 50 people, while outdoor events are capped at 100. It’s not known whether the wedding event in question was inside or outside, or if the event followed the province’s size restrictions.
“Instead of vilifying the people that are hosting this event, I think we really need to recognize this is really a failure of our guidelines at a time when we have exponential COVID-19 growth,” Vipond said.
“We just seem to be failing to learn from other places when they were at this level of the curve.”
Jenne said while it’s worth looking at whether guidelines like physical distancing, mask-wearing and attendance numbers were followed, ultimately, having large indoor gatherings right now simply isn’t safe.
“The virus doesn’t really care that you wore a mask until you sat down at the table … you have 100 people eating in the same room and multiple people at tables, this really creates an opportunity for the virus to move around,” he said.
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