TORONTO -- Some Canadians who tested positive for COVID-19 are reporting that they never received a 鈥渙ne-time key鈥 to enter their test results into the federal exposure notification app.

The app, called COVID Alert, was officially launched this summer, but has faced efficacy and access concerns since its inception. This month, several CTVNews.ca readers expressed confusion about the app and its 鈥溾 system, a unique code that activates the app鈥檚 notification function, alerting users who may have been in close proximity to a positive case.

One CTVNews.ca reader said he only received a key once he asked for one 鈥 10 days after testing positive.

鈥淚 was playing it by ear, waiting for public health. If it鈥檚 up to them to share it, I was just relying on that,鈥 Kevin LeClair, a 36-year-old speech therapist in New Brunswick, told CTVNews.ca over the phone last week. 鈥淐learly there鈥檚 a glitch.鈥

LeClair said he contracted COVID-19 from a coworker earlier this month and passed it on to his wife, a 34-year-old registered nurse, and their seven-year-old daughter, who has yet to experience any symptoms. After his positive test result on Oct. 10, he expected to be provided with a 鈥渙ne-time key,鈥 but that never happened. On Monday this week, during a routine call from a public health nurse, he asked about the codes and was later provided with one.

But how many have gone unused or unassigned? At Tuesday鈥檚 public health briefing, Deputy Prime Minister Chyrstia Freeland said that the government isn鈥檛 relying on 鈥渁 single magic bullet鈥 like a smartphone app and that she was not aware of concerns related to missing COVID Alert key codes.

鈥淥f course we need to look into [those concerns] and be sure that the app is working as well as it can,鈥 she said at the Ottawa press conference.

App uptake has been relatively low, though growing. As of Oct. 15, COVID Alert has been downloaded about 4.5 million times, just 12 per cent of the national population. Two of the country鈥檚 largest provinces, British Columbia and Alberta, have yet to sign on, and none of the territories are using the app.

A tiny fraction of its millions of users have used a 鈥渙ne-time key鈥 to report a positive COVID-19 result. Though there have been more than 200,000 confirmed cases of the virus across Canada, only have been used.

While it鈥檚 unclear how many of the app鈥檚 millions of users have not received a one-time key when they should have, LeClair鈥檚 case in New Brunswick isn鈥檛 a one-off incident. Other CTVNews.ca readers have expressed similar issues.

In Ontario last month, 33-year-old Ani Nersessian learned she was positive for COVID-19 only after calling the Toronto clinic where she got the test when her results wouldn鈥檛 show up on the public health testing site. But since the COVID Alert app directs Ontario users to that same public health testing site in order to get a one-time key, she wasn鈥檛 able to get a code.

鈥淚 started calling the clinic, Toronto Public Health, the app help line. I kept going around in circles,鈥 she told CTVNews.ca over the phone Tuesday. 鈥淚n the end, they told me 鈥榙on鈥檛 worry about it, we鈥檒l take care of the tracing.鈥欌

In Ottawa, retired couple Chantal Ringuette, 57, and Joel Bernardi, 60, ordered a COVID-19 test through their health care provider via courier. Bernardi received a positive result from a private Toronto clinic, which said it doesn鈥檛 report results to public health. When Bernardi reported his results, he was told that he wouldn鈥檛 get a one-time key since the test was done at a private lab. The couple was disappointed. They had already alerted all of their contacts, but were curious to see how the app functioned and if their friends received exposure notifications. 

鈥淵ou can鈥檛 rely on it,鈥 Ringuette said over the phone from Ottawa on Tuesday. 鈥淚t鈥檚 kind of like a little luxury. It鈥檚 not something that is very effective at doing contact tracing.鈥