CBR
search
Health

A general view of a sign outside of the University of Oxford Old Road Campus, which houses the Jenner Institute and is where the first human trials of a coronavirus vaccine developed by researchers at the University of Oxford is taking place in Oxford, England on April 29, 2020. (Photo by Getty Images)

Virus vaccine put to final test in thousands of volunteers

A general view of a sign outside of the University of Oxford Old Road Campus, which houses the Jenner Institute and is where the first human trials of a coronavirus vaccine developed by researchers at the University of Oxford is taking place in Oxford, England on April 29, 2020. (Photo by Getty Images)

The world’s biggest COVID-19 vaccine study got underway Monday with the first of 30,000 planned volunteers helping to test shots created by the US government — one of several candidates in the final stretch of the global vaccine race.

Patients wait in line at a walk up COVID-19 testing site at A+ Academy Secondary School on June 27, 2020 in Dallas, Texas. (Photo by Montinique Monroe/Getty Images)

There’s still no guarantee that the experimental vaccine, developed by the National Institutes of Health and Moderna Inc., will really protect.

The needed proof: Volunteers won’t know if they’re getting the real shot or a dummy version. After two doses, scientists will closely track which group experiences more infections as they go about their daily routines, especially in areas where the virus still is spreading unchecked.

“Unfortunately for the United States of America, we have plenty of infections right now” to get that answer, NIH’s Dr Anthony Fauci recently told The Associated Press.

Chinese police guard the entrance to the closed Xinfadi market in Beijing on June 13, 2020. Photographer: Greg Baker/AFP/Getty Images

Moderna said the vaccination was done in Savannah, Georgia, the first site to get underway among more than seven dozen trial sites scattered around the country.

Several other vaccines made by China and by Britain’s Oxford University began smaller final-stage tests in Brazil and other hard-hit countries earlier this month.

But the US requires its own tests of any vaccine that might be used in the country and has set a high bar: Every month through fall, the government-funded COVID-19 Prevention Network will roll out a new study of a leading candidate — each one with 30,000 newly recruited volunteers.

The massive studies aren’t just to test if the shots work — they’re needed to check each potential vaccine’s safety. And following the same study rules will let scientists eventually compare all the shots.

People wearing protective masks listen to instructions at a Catholic Charities Brooklyn and Queens pop-up food pantry in the Brooklyn borough of New York, US, on Friday, May 29, 2020.

Next up in August, the final US study of the Oxford shot begins, followed by plans to test a candidate from Johnson & Johnson in September and Novavax in October — if all goes according to schedule. Pfizer Inc. plans its own 30,000-person study this summer.

That’s a stunning number of people needed to roll up their sleeves for science. But in recent weeks, more than 150,000 Americans filled out an online registry signalling interest, said Dr Larry Corey, a virologist with the Fred Hutchinson Cancer Research Institute in Seattle, who helps oversee the study sites.

“These trials need to be multigenerational, they need to be multi-ethnic, they need to reflect the diversity of the United States population,” Corey told a vaccine meeting last week. He stressed that it’s especially important to ensure enough black and Hispanic participants as those populations are hard-hit by COVID-19.

Shoppers wearing protective masks walk through the Coche market in Caracas, Venezuela, on Tuesday, March 31, 2020.

It normally takes years to create a new vaccine from scratch, but scientists are setting speed records this time around, spurred by knowledge that vaccination is the world’s best hope against the pandemic. The coronavirus wasn’t even known to exist before late December, and vaccine makers sprang into action January 10 when China shared the virus’ genetic sequence.

Just 65 days later in March, the NIH-made vaccine was tested in people. The first recipient is encouraging others to volunteer now.

That first-stage study that included Haller and 44 others showed the shots revved up volunteers’ immune systems in ways scientists expect will be protective, with some minor side effects such as a brief fever, chills and pain at the injection site. Early testing of other leading candidates have had similarly encouraging results.

If everything goes right with the final studies, it still will take months for the first data to trickle in from the Moderna test, followed by the Oxford one.

Governments around the world are trying to stockpile millions of doses of those leading candidates so if and when regulators approve one or more vaccines, immunisations can begin immediately. But the first available doses will be rationed, presumably reserved for people at highest risk from the virus.

–Associated Press