The recommended quarantine time for close contacts of a positive COVID-19 case is being reduced by up to a week in the United States, but while some of Canada’s health experts say a similar approach could be useful here, others aren’t so sure.
The U.S.-based Centers for Disease Control and Prevention (CDC) announced Wednesday it had shortened the recommended length of quarantine after exposure from 14 days to 10 — or seven days with a negative test result.
Health Canada was still recommending a 14-day quarantine period as of Wednesday, but Dr. Zain Chagla, an infectious disease specialist at McMaster University in Hamilton, says cutting that time in half would be beneficial.
“It would be super important for the sake of incentivizing people to actually quarantine after exposure,” he said.
“And there’s a lot of different things that could theoretically open up — getting health-care workers back to work, getting kids back to school — a lot of ways where this could ease the burden of potential exposure in society.”
The CDC had previously said the incubation period for the coronavirus that causes COVID-19 could extend to 14 days, but the organization now says most people become infectious and develop symptoms between four and five days after exposure.
Chagla says the 14-day window was likely inspired from SARS data, where the incubation period was longer.
While isolation and quarantine are sometimes used interchangeably, Chagla says there’s a difference in the terms. Isolation is for those who have tested positive, while quarantine is for people who may or may not actually have the virus, like close contacts of positive cases or those travelling into Canada. Isolation recommendations for positive cases vary, but are typically 10 days after symptom onset.
Typical course of infection
Ashleigh Tuite, an epidemiologist at the University of Toronto, says a change in quarantine guidance reflects our evolving understanding of COVID-19.
“If you’re exposed, it takes a couple days for you to become infectious, so [seven to 10 days] should be enough to tell whether you’ve got the virus,” Tuite said. “But of course, that’s assuming your experience is reflective of the typical course of infection.”
The key to the CDC’s new guidance for Tuite is having the option to end quarantine at seven days with a negative test result. She suspects that’s in place to stop people who have the virus but no symptoms from ending the quarantine period too early.
A positive test at Day 7 would mean that person should continue to isolate, Tuite said, while a negative result would mean they could safely end quarantine, knowing enough time has passed since exposure to confidently assume they won’t still get sick.
Testing capacity challenges
Dr. Don Sheppard, the founder and director of the McGill Interdisciplinary Initiative in Infection and Immunity (MI4), says the CDC’s plan makes sense scientifically, but there would be logistical issues in testing every COVID contact in Canada who wanted to end their quarantine at Day 7.
“It’s impossible to do that,” he said. “It’s either 14 days of proper isolation, or it’s seven days with a negative test, and right now our system cannot offer seven days plus testing to the public at large.”
WATCH | Could the 14-day isolation period be shorter? (At 01:18:45):
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Testing capacity does exist in certain situations, Sheppard said, like for health-care workers and other front-line staff that need a quicker quarantine to get back to work. He cautioned, however, that taking a test on Day 7 still means isolating for an extra day or two while awaiting results.
Quarantine also needs to be done solo in order to work, Sheppard added, warning that the CDC guidance isn’t meant as a loophole for holiday gatherings if your family isolates together for seven days before an event.
Supports for people to quarantine
He used an example of military recruits in the U.S. who were told to quarantine for 14 days before reporting to camp. A handful of positive tests (0.9 per cent) were caught upon arrival, suggesting true quarantine hadn’t been followed.
Those recruits were sent home while the rest underwent another group quarantine. When tested again two weeks later, the positivity rate had grown to 1.3 per cent.
“Why? Because there were people incubating and they turned positive. And those people infected others in their groups,” Sheppard said.
“So if you don’t do strict, single-person isolation, you don’t actually break the cycle of transmission, you just pass it around in your group.”
Tuite says that further illustrates the usefulness of a shortened quarantine period.
A mother with young children, or someone who shares a small apartment with another person will find it harder to properly quarantine for longer periods, she said, as will someone who can’t afford to take a full two weeks off work.
“It really comes down to having the means to do it,” she said. “Can you survive for two weeks if you’re not getting income? Can you isolate in a household with multiple people?
“We need to have support in place so that people can quarantine, and that doesn’t change whether it’s for a week or 14 days. But it becomes much more challenging when it’s for longer periods.”
EDMONTON – RCMP say a second suspect has been arrested in the killing of an Alberta county worker.
Mounties say 28-year-old Elijah Strawberry was taken into custody Friday at a house on O’Chiese First Nation.
Colin Hough, a worker with Rocky View County, was shot and killed while on the job on a rural road east of Calgary on Aug. 6.
Another man who worked for Fortis Alberta was shot and wounded, and RCMP said the suspects fled in a Rocky View County work truck.
Police later arrested Arthur Wayne Penner, 35, and charged him with first-degree murder and attempted murder, and a warrant was issued for Strawberry’s arrest.
RCMP also said there was a $10,000 reward for information leading to the arrest of Strawberry, describing him as armed and dangerous.
Chief Supt. Roberta McKale, told a news conference in Edmonton that officers had received tips and information over the last few weeks.
“I don’t know of many members that when were stopped, fuelling up our vehicles, we weren’t keeping an eye out, looking for him,” she said.
But officers had been investigating other cases when they found Strawberry.
“Our investigators were in O’Chiese First Nation at a residence on another matter and the major crimes unit was there working another file and ended up locating him hiding in the residence,” McKale said.
While an investigation is still underway, RCMP say they’re confident both suspects in the case are in police custody.
This report by The Canadian Press was first published Sept. 13, 2024.
RICHMOND, B.C. – The Integrated Homicide Investigation Team says the 26-year-old son of a man found dead on British Columbia’s Sunshine Coast has been charged with his murder.
Police say 58-year-old Henry Doyle was found badly injured on a forest service road in Egmont last September and died of his injuries.
The homicide team took over when the BC Coroners Service said the man’s death was suspicious.
It says in a statement that the BC Prosecution Service has approved one count of first-degree murder against the man’s son, Jackson Doyle.
Police say the accused will remain in custody until at least his next court appearance.
The homicide team says investigators remained committed to solving the case with the help of the community of Egmont, the RCMP on the Sunshine Coast and in Richmond, and the Vancouver Police Department.
This report by The Canadian Press was first published Sept. 13, 2024.
VANCOUVER – Mediated talks between the union representing HandyDART workers in Metro Vancouver and its employer, Transdev, have broken off without an agreement following 15 hours of talks.
Joe McCann, president of Amalgamated Transit Union Local 1724, says they stayed at the bargaining table with help from a mediator until 2 a.m. Friday and made “some progress.”
However, he says the union negotiators didn’t get an offer that they could recommend to the membership.
McCann says that in some ways they are close to an agreement, but in other areas they are “miles apart.”
About 600 employees of the door-to-door transit service for people who can’t navigate the conventional transit system have been on strike since last week, pausing service for all but essential medical trips.
McCann asks HandyDART users to be “patient,” since they are trying to get not only a fair contract for workers but also a better service for customers.
He says it’s unclear when the talks will resume, but he hopes next week at the latest.
The employer, Transdev, didn’t reply to an interview request before publication.
This report by The Canadian Press was first published Sept. 13, 2024.
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