Jul 7, 2021
An analysis from Public Health England found that Delta is associated with a 60% increased risk of household coronavirus transmission compared to Alpha, the variant discovered in the UK. Alpha is already around 50% more transmissible than the original strain, according to the Centers for Disease Control and Prevention. Researchers in Scotland also found that getting infected with Delta doubles the risk of hospital admission relative to Alpha. (Previous studies have suggested that Alpha may be 30% to 70% deadlier than the original strain.)
Aria Bendix, ‘The Delta variant is fuelling school outbreaks in Israel, leading the country's cases to tick up’, Business Insider US