BBC3 年
Covid: Delta variant spreads globally as cases soar
The Delta variant of Covid-19 has now been detected in 124 territories worldwide, the World Health Organization (WHO) says. It is expected to become the dominant variant globally in the coming ...
朝日新聞社2 年
Study: Mutation found that makes Delta variant more deadly
A certain mutation in the COVID-19 Delta variant causes infected cells to form disruptive chunks in the lungs and leads to more serious symptoms of the disease, a research team said. If the cells ...