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Why COVID-19 boosters weren't tweaked to better match variants

More COVID-19 booster shots may be on the way -- but when it's your turn, you'll get an extra dose of the original vaccine, not one updated to better match the extra-contagious delta variant. And that has some experts wondering if the booster campaign is a bit of a missed opportunity to target delta and its likely descendants.

Registered nurse Alix Zacharski, left, receives a Pfizer COVID-19 booster shot from Douglas Houghton, right, at Jackson Memorial Hospital Tuesday, Oct. 5, 2021, in Miami. (AP Photo/Lynne Sladky)

Colin Powell dies, exemplary general stained by Iraq claims

Colin Powell, the barrier-breaking soldier and diplomat who served Democratic and Republican presidents in war and peace but whose sterling reputation was stained by his faulty claims to justify the U.S. war in Iraq, died Monday of COVID-19 complications. He was 84.

In this May 31, 2012 file photo, former Secretary of State Colin Powell is seen in the East Room of the White House in Washington. (Pablo Martinez Monsivais, File/AP Photo)

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Climate and Environment

Celebrities join Prince William for Earthshot Prize award

Celebrities joined Prince William in London on Sunday for the inaugural awards ceremony of his Earthshot Prize, an ambitious environmental program aimed at finding new ideas and technologies around the world to tackle climate change and Earth's most pressing challenges.

Opinion

OPINION

OPINION | Tom Mulcair: Freeland positioning herself to take over as Liberal leader

Of the five political parties with MPs in the House, only the Liberals have never had a woman as leader. Prime Minister Justin Trudeau will be doing everything he can to help Chrystia Freeland get his job if and when he decides to pack it in, writes former NDP Leader Tom Mulcair in an exclusive column for CTVNews.ca.

OPINION

OPINION | Don Martin: Jason Kenney's political fate is in the ICU - and failing fast

Alberta Premier Jason Kenney is confronting a full-throated justification for a pink slip thanks to his chronic tone-deafness during the pandemic, incredulously topped off by taking a two-week vacation in Europe this month as Albertans were dying from the consequences of his policies, writes Don Martin in his exclusive column for CTVNews.ca.

W5 HIGHLIGHTS

EXCLUSIVE

EXCLUSIVE | Jaskirat Sidhu, the 'Humboldt Driver,' speaks out

W5 launches its 56th season with an exclusive interview with Jaskirat Sidhu and his wife Tanvir Mann as they reveal their deep grief over the Humboldt tragedy and their hopes that they will be allowed to stay in Canada.

Truck driver training standards expose fatal flaws

Less than a year after the Humboldt tragedy, pressure on the government resulted in a national set of standards for entry level training for truck drivers. But a W5 investigation reveals it's made little difference when it comes to improving safety standards.