The Covid pandemic is “like a real-world evolution experiment,” says one researcher. “Can the variants beat the vaccines?”
they were vaccinated against. Inoculations provide solid protection against hospitalization and death because the shots prime the immune system to fight off invaders, resulting in less severe disease. Experts say they don’t expect future variants to render vaccines useless, especially if vaccines and boosters continue to prevent the worst outcomes.
One important advantage that scientists have now in combating the virus: improved technology. In the past, the painstaking analysis of viral genomes to identify mutations and the divergent viral family trees they engender took months, if not years. Now, researchers are working with genomic surveillance systems honed by scientists who studied Ebola outbreaks in Africa.
“Each transmission is an opportunity for a mutation, and each mutation is an opportunity for more dangerous variants,” says Patrick Sullivan, a professor of epidemiology at Emory University’s Rollins School of Public Health.
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