A new study says reduced access to HIV services during early COVID-19 lockdowns in British Columbia was associated with a "sharp increase" in HIV transmission among some drug users.
The study by University of British Columbia researchers says that while reduced social interaction during the March-May 2020 lockdown worked to reduce HIV transmission, that may not have "outweighed" the increase caused by reduced access to services.
The study, published in Lancet Regional Health, found that fewer people started HIV antiretroviral therapy or undertook viral load testing under lockdown, while visits to overdose prevention services and safe consumption sites also decreased.
The overall number of new HIV diagnoses in B.C. continues a decades-long decline.
But Dr. Jeffrey Joy, lead author of the report published on Friday, said he found a "surprising" spike in transmission among some drug users during lockdown.
Joy said transmission rates for such people had previously been fairly stable for about a decade.
"That's because there's been really good penetration of treatment and prevention services into those populations," he said in an interview.
B.C. was a global leader in epidemic monitoring, which means the results are likely applicable elsewhere, Joy said.
"We are uniquely positioned to find these things," he said. "The reason that I thought it was important to do this study and get it out there is (because) it's probably happening everywhere, but other places don't monitor their HIV epidemic in the same way that we do."
Rachel Miller, a co-author of the report, said health authorities need to consider innovative solutions so the measures "put in place to address one health crisis don’t inadvertently exacerbate another.”
“These services are the front-line defence in the fight against HIV/AIDS. Many of them faced disruptions, closures, capacity limits and other challenges,” Miller said in a news release.
“Maintaining access and engagement with HIV services is absolutely essential to preventing regression in epidemic control and unnecessary harm.”
The Health Ministry did not immediately respond to requests for comment.
Researchers said the spike among "select groups" could be attributed to a combination of factors, including housing instability and diminished trust, increasing barriers for many people who normally receive HIV services.
British Columbia is set to become the first province in Canada to decriminalize the possession of small amounts of hard drugs in January, after receiving a temporary federal exemption in May.
Joy said this decision, alongside measures like safe supply and safe needle exchanges, will make a difference preventing similar issues in the future.
"The take-home message here is, in times of crisis and public health emergency or other crises, we need to support those really vulnerable populations more, not less," he said.
"Minimally, we need to give them continuity and the access to their services that they depend on. Otherwise, it just leads to problems that can have long, long-term consequences."
This report by The Canadian Press was first published Sept. 24, 2022.