'Fill the gap': Sask. student creates tool to track rapid test results, account for unreported COVID-19 cases
Saskatchewan’s recorded COVID-19 cases only reflect the positive results confirmed through a PCR test. However, one epidemiologist says this practice leaves too many cases unreported.
The province now recommends people who are asymptomatic or those with mild symptoms opt for a rapid antigen test rather than a PCR test, in an effort to preserve testing capacity.
PCR tests are still recommended for those who are at greater risk of infection or experiencing severe symptoms.
Epidemiologist Dr. Nazeem Muhajarine says the province is creating a “big gap” in its data by not keeping a formal record of rapid antigen test results. He adds that gap is “irretrievable” once the time has passed, as it is impossible to backdate all those cases.
“Without incidents and prevalence that are accurate, we know nothing about disease and the spread of a disease,” Muhajarine said.
Muhajarine says case numbers are a “fundamental” indicator for epidemiology, helping understand the scale of the spread. They can also trigger further investigation into new variants and help people better understand the “societal-wide burden” of the disease.
In certain provinces like Ontario, Muhajarine estimates there are about two or three unreported cases of COVID-19 for every one positive PCR test result.
However, he says it is unclear exactly how many cases in Saskatchewan are unreported.
“We have lots of unknowns with rapid antigen tests, which is why we have little to no idea how much of an undercounting is going on at this point in time,” Muhajarine said.
This is where Noah Little comes in.
The University of Saskatchewan student created an online COVID-19 tracker at the start of the pandemic. It tracks case numbers, vaccinations and hospitalizations across Canada based on regions.
Since Little teamed up with Muhajarine, it now tracks self-reported rapid antigen test results.
“The whole idea of this is to fill the gap in official reporting,” Little said.
“It’s not to replace the official case counts, but it’s to really supplement that and maybe try to catch some of these cases that we’re missing with such limited testing.”
Since the launch of the new tracker, Little says more than 6,000 people have reported their rapid antigen test results, with about 2,000 coming from Saskatchewan.
The feature tracks positive, negative and invalid test results. All people have to do is enter their result, their age, the first three characters of their postal code and the date of the test.
“We collect very limited data just to be protected on that privacy front,” Little said.
Little says the biggest barrier is access to both the internet and rapid tests. However, if people get passed that, it will only take about 20 seconds to complete the entry.
“At the end of the day it’s more and more valuable the more and more people actually use it,” Little said.
New Brunswick recently started reporting rapid antigen test results on its government dashboard. Saskatchewan’s chief medical health office says that is something the government could look at doing in the future.
According to Dr. Saqib Shahah, the province’s cases that are confirmed through PCR testing represent about 20 to 30 per cent of all cases.
Shahab says at any given time two to three per cent of Saskatchewan’s population could have COVID-19, which is roughly 20,000 to 30,000 people.
As a result, Shahab says we can no longer rely on testing numbers and daily new cases as indicators.
“This is a very different phase of the pandemic. We will have to rely more on the lagging indicator of hospitalizations,” he said.
No matter how many extra resources are deployed to PCR testing sites, Shahab says it will not be able to keep up with demand.
He encourages those who test positive on a rapid antigen test to report it online.
“I think that could be an additional tool. Obviously it’s not going to be complete but it does give you a sense of what’s happening,” he said.
Muhajarine would like to see the government use an official tracking system for rapid tests.
Rapid antigen tests play an important role screening and self-monitoring, but Muhajarine says “we are asking it to do more that what we had built it to do.”
Ideally, he says rapid tests will only temporarily be used for diagnosis, as the province tries to limit the strain on testing capacity due to Omicron.
Once this wave passes, he would like to see PCR testing available for everyone.
CTVNews.ca Top Stories
Former homicide detective explains how police will investigate shooting outside Drake's Bridle Path mansion
Footage from dozens of security cameras in the area of Drake’s Bridle Path mansion could be the key to identifying the suspect responsible for shooting and seriously injuring a security guard outside the rapper’s sprawling home early Tuesday morning, a former Toronto homicide detective says.
Federal government grants B.C.'s request to recriminalize hard drugs in public spaces
The federal government is granting British Columbia's request to recriminalize hard drugs in public spaces, nearly two weeks after the province asked to end its pilot project early over concerns of public drug use.
Stormy Daniels describes meeting Trump during occasionally graphic testimony in hush money trial
Stormy Daniels took the witness stand Tuesday at Donald Trump's hush money trial, describing for jurors a sexual encounter the porn actor says she had with him in 2006 that resulted in her being paid off to keep silent during the presidential race 10 years later.
MPs agree Canadian gov't should improve new disability benefit
The federal government needs to safeguard the incoming Canada Disability Benefit from clawbacks and do more to ensure it actually meets the stated aim of lifting people living with disabilities out of poverty, MPs from all parties agree.
Bye-bye bag fee: Calgary repeals single-use bylaw
A Calgary bylaw requiring businesses to charge a minimum bag fee and only provide single-use items when requested has officially been tossed.
CFL suspends Argos QB Chad Kelly at least nine games following investigation
The CFL has suspended Toronto Argonauts quarterback Chad Kelly for at least nine regular-season games following its investigation into a lawsuit filed by a former strength-and-conditioning coach against both the player and club.
Boy Scouts of America changing name for first time in 114 years, aiming for inclusivity
The Boy Scouts of America is changing its name for the first time in its 114-year history and will become Scouting America. It's a significant shift as the organization emerges from bankruptcy following a flood of sexual abuse claims and seeks to focus on inclusion.
opinion Tom Mulcair: Trudeau's handling of Poilievre's 'wacko' House turfing a clear sign of Liberal desperation
When Speaker Greg Fergus tossed out Pierre Poilievre from the House last week, "those of us who have experience as parliamentarians simply couldn't believe our eyes," writes former NDP leader Tom Mulcair in his column for CTVNews.ca
New charges for Ont. woman who previously admitted to defrauding doulas
The Brantford, Ont. woman who was previously sentenced to house arrest after admitting to deceiving doulas has been charged again in connection to a new victim.