The Delta variant of the SARS-CoV-2 virus is now rapidly becoming the dominant strain. This variant is more easily transmissible and more dangerous, and Dhruv Kullar warns that from the evidence gained so far from the UK, it poses a greater risk to the unvaccinated.
Earlier this year, scientists estimated that lineage B.1.1.7-the Alpha variant, first isolated in England-could be some sixty per cent more transmissible than the original version of sars-CoV-2. Now experts believe that the Delta variant is sixty per cent more transmissible than Alpha-making it far more contagious than the virus that tore through the world in 2020. It hasn’t yet been conclusively shown that Delta is more lethal, but early evidence from the U.K. suggests that, compared to Alpha, it doubles the risk of a person’s being hospitalized. Even if the variant turns out to be no deadlier within any one person, its greater transmissibility means that it can inflict far more damage across a population, depending on how many people remain unvaccinated when it strikes.
