1) Premier François Legault warned on Wednesday evening that the Montreal region will be hit with an increase in the next few weeks of #COVID19 cases and hospitalizations fueled by the B.1.1.7 variant from the U.K. In this thread, I will assess the likelihood of this occurring.
2) Health Minister Christian Dubé noted that projections to be unveiled on Thursday morning will include a scenario of 2,000 to 3,000 daily #COVID19 cases and a range of 1,500 to 2,000 hospitalizations, back to where Quebec was in early January.
3) Dubé made those remarks after Quebec’s public health institute reported 125 more presumptive #COVID19 cases involving variants of concern, for a total of 1,220. The number of confirmed cases has remained at 137. Please see the chart below.
4) The proportion of new #COVID19 cases in Montreal that are linked to the B.1.1.7 variant rose from 12% last week to up to 16% in the past few days, Dr. Mylène Drouin, head of the city’s public health department, told reporters earlier on Wednesday.
5) Dr. Drouin attributed the spread of B.1.1.7 to elevated transmission in schools, raising the question as to why authorities did not take more precautions months earlier by testing students more often and installing air purifiers in poorly ventilated classrooms.
6) But new data by the public health department show that a month after non-essential commercial outlets were allowed to reopen, transmission of the #coronavirus is beginning to rise (slowly but surely) in retail, big box, and grocery stores. See the chart below.
7) Given that the B.1.1.7 variant is considered to be about 50% more transmissible, the prospect of it taking hold in the retail sector is worrisome. And in just a few days, schools will reopen following the March break.
8) Meanwhile, another Montreal elementary school, École Notre-Dame-des-Rapides in LaSalle, declared on Wednesday a suspected #COVID19 case involving a variant, according to covidecolesquebec.org. In total, 36 Quebec schools have reported presumptive or suspected variant cases.
9) The province also reported an uptick in #COVID19 outbreaks Wednesday. The number in daycares inched up by two to 79, by three to 231 in schools and by 15 to 267 in the workplace. We don’t know what the percentage of cases is involving B.1.1.7 or the other variant, B.1.351.
10) Quebec, like jurisdictions around the world, is entering a new phase in the #pandemic best described as “Vaccines versus the Variants.” On Wednesday, authorities set another record in vaccinating 11,181 Montrealers for a total of 134,781 in the metropolis.
11) But researchers at Simon Fraser University, who have also issued dire projections for Quebec for late March and April, cautioned this week that “right now, vaccination is not going to impact transmission in the 6-to-8 week time frame” of their forecasts. End of thread.
Addendum: The following charts could not fit into tonight’s thread, so I’m reproducing them here. The chart below reveals an upswing in #COVID19 cases in Montreal, with 338 disclosed on Wednesday. Drouin said Montreal is stuck in a #pandemic plateau.
Addendum 2: The chart below shows that transmission of the #coronavirus — including the B.1.1.7 variant — is heightened in the following Montreal districts and boroughs: Anjou, Côte-des-Neiges—Notre-Dame-de-Grâce, Côte-Saint-Luc, Pointe-Claire and Saint-Laurent.
Addendum 3: Given the stakes involved, the Montreal public health department needs to clarify what the category of “other” means, since the number of #COVID19 outbreaks in this sector rose by nine since last week. Please see the chart below.
Addendum 4: And finally, back to my pet peeve, the congestion in the city’s hospital emergency rooms. During the first wave and second waves, #COVID19 outbreaks did flare up in crowded ERs. With B.1.1.7 on the loose, the potential for more such outbreaks is greater.

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More from @Aaron_Derfel

4 Mar
1) Despite the welcome ramp-up in #COVID19 vaccinations, several disturbing facts emerged on Thursday in Montreal and across Quebec suggesting that either the second wave of the #pandemic is far from over, or that a third wave may have already begun.
2) Provincially, the number of #COVID19 outbreaks in the workplace rose for a second day in a row, up to 275 from 252 two days earlier. At this stage, it’s hard to gauge whether this increase is being driven by the more transmissible variants of concern.
3) But Quebec’s public health institute did declare its biggest single-day increase in the number of presumptive #COVID19 cases involving variants, with a cumulative total of 1,353, up by 133. The number of confirmed cases remained at 137.
Read 11 tweets
3 Mar
1) Strange things are now happening in the #pandemic in Montreal at this juncture, with #COVID19 cases plummeting but hospitalizations rising, and the much more contagious B.1.1.7 variant circulating. In this thread, I will try to make sense of these cross currents.
2) For three days in a row, #COVID19 hospitalizations have crept up in Montreal. The total rose by six to 358 on Tuesday, with the Jewish General, Sainte-Justine, the Royal Victoria, the Lakeshore General, Santa Cabrini and Notre Dame posting modest increases in admissions.
3) Normally in this #pandmemic, #COVID19 cases increase first, followed by a rise in hospitalizations about two weeks later and then a spike in deaths two or three weeks afterward. But in the last few days, hospitalizations have gone up as cases have dwindled.
Read 11 tweets
2 Mar
1) As Quebec on Monday posted 51 more presumptive cases involving the more contagious #COVID19 variants, new projections warn the province could be hit with a third wave in March and April that's much higher than the previous two.
2) Simon Fraser University researchers Elisha Are and Caroline Colijn wrote in a blog posting on Monday that most of Canada has been able to control #COVID19 recently, but they suggested that the B.1.1.7 variant (now spreading through Montreal) poses a much bigger problem.
3) Should B.1.1.7 become established, Quebec and five other provinces could be sideswiped by exponential growth in #COVID19 cases, with a doubling time of one to two weeks, compared to earlier doubling times of up to 40 days in Ontario. Please see the chart below for Quebec.
Read 10 tweets
28 Feb
1) Quebec on Sunday confirmed that the more contagious #COVID19 variants are indeed spreading across the province. This news comes amid a second outbreak in an eldercare home and an uptick in #pandemic hospitalizations in Montreal.
2) In the chart below, Quebec’s public health institute confirmed another 103 variant cases for a total of 137. Most involve the B.1.1.7 variant in Montreal. Six more were found in Laval and two in Lanaudière. B.1.1.7, originating in the U.K., is considered 50% more contagious.
3) Authorities also confirmed through genetic sequencing 38 more cases of the B.1.351 variant which first appeared in South Africa. Quebec now has far more cases of the B.1.351 variant than any another province in Canada.
Read 10 tweets
28 Feb
1) Covidecolesquebec.org on Saturday recorded the 30th school to date with suspected or presumptive #COVID19 variants. That news coincided with revelations of an uptick in cases in the greater Montreal region of multi-system inflammatory syndrome in children.
2) The rise in cases of the rare pediatric syndrome at the Montreal Children’s and Sainte-Justine hospitals started before January’s emergence of the more transmissible B.1.1.7 variant, and challenges the myth that #COVID19 is harmless in children. montrealgazette.com/news/local-new…
3) Meanwhile, Premier François Legault exhorted Quebecers on Saturday to avoid private gatherings during the March break, warning of the presence of B.1.1.7, which originated in the U.K. in December and is now responsible for a surge in cases throughout Europe.
Read 9 tweets
27 Feb
1) Quebec on Friday posted 102 more presumptive #COVID19 cases involving the more transmissible variants. But there are still many stats about the variants that Quebec has not yet made public, unlike in neighboring Ontario. In this thread, I will highlight those information gaps.
2) The first gap to highlight is the fact that Ontario has to date reported a cumulative total of 2,099 presumptive #COVID19 variant cases, 140% higher than Quebec’s tally of 874. This suggests that Ontario is screening for the variants a lot more than Quebec.
3) But it’s impossible to confirm that Ontario is, in fact, screening more for the variants, because Quebec is not releasing the data on the total number of positive tests that have undergone “criblage.” In Ontario, the figure for screened tests is 18,125.
Read 14 tweets

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