Source: China – South China Morning PostThe Chinese border city of Ruili went into lockdown on Wednesday after mass testing uncovered 15 new locally transmitted Covid-19 cases.Authorities in the southwest province of Yunnan, which neighbours Myanmar, said genome sequencing of samples from seven patients showed the strain was closely related to the highly transmissible Delta variant and the strain circulating in Myanmar.Ruili party chief Zhai Yulong said authorities would trace the source of the latest outbreak and strengthen border…Read More