Canada's 'residual positives' exemption lets hundreds fly home after recovering from COVID - Action News
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Canada's 'residual positives' exemption lets hundreds fly home after recovering from COVID

A mechanism for returning travellers who haven't gotten clean negative PCR results because of the lingering effects of recovering from COVID-19 has allowed 350 people who once had the illness to return to Canada.

More than 300 travellers have been able to return to Canada despite lingering virus and positive PCR tests

A COVID-19 screening centre is pictured at Vancouver International Airport in Richmond, B.C. Friday, February 19, 2021. (Jonathan Hayward/The Canadian Press)

While borders and quarantines remainhot issues here, Canada appears to have avoided one problem that has afflicted many other countries the plight ofstranded "residual positives."

The term "residual positive" refers to a COVID test result that continues to detect the presence of virus long after a person has recovered from the disease. In some cases, test results are merely inconclusive, rather than positive but that's stillenough for an airline todenypermission to board.

Countriessuch as Irelandhave seen large numbers of theirnationals stranded overseas because of lingering traces of virus, even though they no longer pose a threat of transmission to others.

Ireland is now working on findinga solutionwith other EU nations.Meanwhile, dozens of Australians who wererefused flights home from India because of dubious positive test results are still awaiting a solution.

Negative test or no flight

Many nations apply rules like Australia's, which state that those entering the country "must provide evidence of a negative COVID-19 (PCR) test 72 hours or less prior" to their flight departure "at the departure point.

"This applies to all travellers five years of age or older," the Australia regulation states. "If you or a member of your travelling group test positive, you won't be allowed to travel to Australia."

West Australian cricket player Ashton Turner has his temperature checked prior to G2G verification by West Australian police after arriving from Adelaide on Qantas flight QF889 at Perth Airport on November 14, 2020 in Perth, Australia. (Paul Kane/Getty Images)

Canada has a similar requirementand it's very hard to dodge, saidSimon Rivet of Transport Canada. Hisdepartment tracks airline compliance with the PCRtesting requirement; hetold CBC News it is "very high. With approximately 4,400 international/transborder passengers arriving daily in Canada, compliance with the pre-departure testing requirements is about 99.8 per cent."

But within those rules, Canada has made allowances for the existence of residual positives. That exemption has allowed hundreds of previously-sick Canadians to get back home since February.

Bring your old positive

"Travellers who provide proof of a previous positive molecular test result taken between 14 and 90 days before departure to Canada in lieu of a negative test will be exempt from testing on arrival and during quarantine," said Anne Genier of the Public Health Agency of Canada.

"These travellers will also be exempt from the mandatory 3-night stay at a government-authorized hotel, but must still quarantine for 14 days at a suitable place of quarantine. This exemption addresses the potential for residual positive tests given that individuals can continue to test positive up to three months after they have recovered and are no longer infectious."

Genier told CBC News that 350 travellers have provided such proof and were able to return to Canada between February 22 and May 16, 2021.

The 14-to-90-day window for the requirement reflects the fact that while no one should be able to travel within 14 days of a positive diagnosis of COVID, patients who recover are no longer a threat to others after that period. The 90-day maximum reflects uncertainty about how long the natural immunity that comes from beating COVID actually lasts.

The same rules apply when presenting an old positive testas when presenting a negative test, said Cybelle Morin of Transport Canada. It must include the person's name and date of birth, the name and civic address of the laboratory that administered the test, the date the specimen was collected, the testing method usedand the test result.

Morin saidairlines flying to Canada are well aware of the rules and the exceptions.

"Air carriers have been issued guidance on how to implement the Interim Order Respecting Certain Requirements for Civil Aviation Due to COVID-19. Transport Canada also coordinates weekly calls with the aviation stakeholders to help address issues and to consult them on potential changes to the Interim Order."

Positivity rate dropping fast

Meanwhile, preliminary data on air traveller testing showa steep decline in the percentage of arrivals testing positive for COVID-19 since a ban on flights from India and Pakistan was instituted on April 22.

In that week, 2.6 per centof samples collected from international air travellers landing in Canada produced positive results the highest positivity rate recorded so far this year.

The rate fell to 1.6 per cent in the week afterthe ban was imposed.It dropped further to just 0.6 per centin the week of May 2-8 the lowest rate recorded for months.

About 56 per centof those arriving at Canada's airports were returning citizens and permanent residents; the rest were foreign nationals.

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