The Oxford shot is one of about a dozen experimental vaccines in early stages of human testing or poised to start, mostly in China, the U.S. and Europe
. Scientists have never created vaccines from scratch this fast and it’s far from clear that any of the candidates will ultimately prove safe and effective.
Another question addressed in the next stage of testing is how the shot will affect older adults, who are at high risk from COVID-19. Pollard noted those over 70 often don’t get as much protection from vaccines as younger people. Often, possible vaccines that look promising early fail after testing expands to thousands of people – one reason the crowded field is important. Many of the candidates work in different ways, and are made with different technologies, increasing the odds that at least one approach might succeed.
Canada Latest News, Canada Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Top 10: Finger momentsAfter Chase Elliott flipped off Kyle Busch on Wednesday night, we take a look at the best finger moments in this edition of the SportsCentre Top 10:
Read more »
Top 10: Mike Trout momentsRelive the top ten moments of Angels' superstar Mike Trout's incredible career thus far.
Read more »
Retail sales fell 10 per cent in March, April expected to be worseStatistics Canada reports retail sales posted their largest monthly drop on record in March and expects an even larger drop for April once the final numbers are tallied.
Read more »
British COVID-19 study aims to vaccinate more than 10,000British researchers testing an experimental vaccine against the new coronavirus are moving into advanced studies and aim to immunize more than 10,000 people to determine if the shot works.
Read more »