Electron microscope image of SARS-CoV-2, the virus that causes COVID-19, released by the U.S. National Institutes of Health in February 2020. (Associated Press)

COVID-19: ‘Community immunity’ testing getting closer in B.C.

‘Frustrating,’ still no antibody test authorized for use in Canada

Some B.C. residents are waiting to be tested, not for COVID-19 but the antibodies created by the immune system to protect against it.

Health Canada has not yet approved a “serology” or antibody test for determining if people have had an immune system response to the coronavirus, but the search is narrowing down, B.C. provincial health officer Dr. Bonnie Henry says.

“There are a couple of good candidates that the B.C. Centre for Disease Control is working on, two in particular,” Henry said in her May 9 briefing. “They are in the midst of testing people who we know had this illness and looking at the antibody test and looking at the antibody levels and how well the test performs, so validating the test.”

Reliable antibody testing would determine what Henry calls “community immunity,” picking up on people who contracted COVID-19 and recovered, in some cases without knowing it.

Antibody testing is of great interest around the world, to determine what immunity a person may have after recovering from COVID-19, and how long it may last. The Lancet, a leading British medical journal, reported in April that U.S. authorities gave the green light for drug companies to start selling tests, on condition they withdraw them from the market if their results aren’t up to standard.

RELATED: B.C. care home part of COVID-19 recovery study

RELATED: B.C. breaks heat records as restrictions ease

One Canadian test group is people who tested positive for COVID-19 at Lynn Valley Care Centre, the first B.C. senior home to record an outbreak, Henry announced in late April. At that time there were 17 different antibody tests being validated, after initial deployment of antibody testing in the U.S. resulted in false positive and false negative results that invalidated their findings.

Health Canada has restrictions on what tests can apply for validation, and is not accepting home or self-test products.

“I have to say, for all of us across the country, it’s a bit of a frustrating process because the tests are not as good as we would hope them to be,” Henry said. “So what we look for is how well they detect people who have the virus and how well they determine people that don’t have the virus. That’s what we call sensitivity and specificity.”

A Canadian expert panel has been set up to look at the immune effects of SARS-CoV-2, the virus that causes COVID-19.


@tomfletcherbc
tfletcher@blackpress.ca

Like us on Facebook and follow us on Twitter.

BC legislatureCoronavirus

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

South Surrey, White Rock seniors find their groove

Parking-lot line-dancing is helping keep Kent Street Activity Centre members moving during pandemic

‘Family meetup centres’ helping White Rock seniors reconnect with loved ones

Converted shipping container allows face-to-face time while ensuring physical distancing

Surrey seniors call Seniors’ Centre Without Walls, a new-to-B.C. program

‘Crazy coincidence’ saw program connect soon after COVID-19 pandemic hit

Facing changes together: Your community, your journalists

The COVID-19 pandemic has changed the world in ways that would have… Continue reading

Surrey pushing the poor out of Whalley, public hearing speakers say

‘There is a war on the poor here in Surrey,’ resident Dave Diewert tells city council

If Trudeau won’t stand up to Trump, how will regular people: Singh

Trudeau did not directly answer a question about Trump’s actions amid protests

VIDEO: Internal investigation into aggressive arrest by Kelowna Mountie

A video allegedly shows a Kelowna Mountie striking a man several times

COVID claims 23rd Langley Lodge patient, making it the deadliest outbreak in B.C.

Coronavirus kills another senior at Langley care home, bringing B.C. total to 166

Family of dead B.C. football star urge changes to mental health policies in hospitals

Uko family disappointed in actions of Regina hospital, hosting public funeral service this weekend

22 new COVID-19 test-positives, one death following days of low case counts in B.C.

Health officials urged British Columbians to ‘stand together while staying apart’

John Horgan says COVID-19 restrictions won’t be eased regionally

B.C. Liberals urge ‘tailored’ response based on infections

Feds get failing grade for lack of action plan on anniversary of MMIWG report

‘Instead of a National Action Plan, we have been left with a Lack-of-Action Plan’

Maple Ridge woman fights WorkSafe BC over police widow’s pension

Dalila Vroom says husband, Const. Rob Vroom, died as a result of PTSD from time with Abbotsford PD

B.C. ranchers, lodge operators say Indigenous land title shuts them out

Tsilhqot’in jurisdiction affects grazing, access to private property

Most Read

l -->