World leaders and experts say sharing vaccine know-how is the best chance to fight the pandemic. But the industry disagrees.
With delays in global production and distribution, mixing two doses of vaccines may end up becoming inevitable. But questions concerning its safety and efficacy remain unanswered.
The drug-making company says their shot was also 100 percent effective in preventing illness among trial participants in South Africa, where a new variant called B1351 is dominant, though the number of those participants was relatively small at 800.
Phase 3 trials carried out on 2,260 adolescents in the US "demonstrated 100 percent efficacy and robust antibody responses," the companies say.
The scientists used spent vials of the Moderna vaccine to reverse-engineer its mRNA sequences.
Local Bosnian authorities are pleading for more resources to help the health system as the country battles a surge in infections with no vaccination drive in sight.
Five of the 10 globally circulating variants were “highly resistant to neutralisation” even after volunteers had received both doses of the Moderna and Pfizer vaccines, researchers reported.
Coronavirus has killed more than 2.4 million people and infected over 110 million globally. Here are virus-related developments for February 19:
Coronavirus has killed more than 2.4 million people and infected over 110 million globally. Here are virus-related developments for February 18:
Coronavirus has killed more than 2.42 million people and infected over 110 million globally. Here are virus-related developments for February 17:
As vaccination drives face supply bottlenecks, experts underscore the importance of sharing vaccine patents and copyrights to ramp up global production.
The drugmaker reports nearly 96 percent efficacy against original SARS-CoV-2 and says the vaccine works but less so against the South Africa variant.
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