Cover Story: Where Covid Vaccine Development Is Going
More than two years into the pandemic, scientists and regulators are still struggling to catch up with the stealthy, rapidly mutating coronavirus as it continues ravaging the world.
Despite the number of effective Covid-19 vaccines in use around the world, new variants increasingly find ways to break through immune system defenses and infect more people. It has become a pressing issue for scientists to find more powerful weapons for containing the new variants.
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