<span style="color: #222222;">China has imposed fresh lockdowns and travel restrictions amidst a surge in Covid cases. China has reported the detection of two new subvariants of Omicron which are highly infectious with greater transmissibility. According to local reports, the BF.7 was detected on October 4 in Yantai and Shaoguan city. The subvariant BA.5.1.7 was detected in the Chinese mainland for the first time. Earlier, the World Health Organisation (WHO) had warned against the highly infectious BF.7 subvariant.</span><br />