One year after the first cases of a novel coronavirus emerged in Wuhan, a team from the World Health Organization has arrived in the city to investigate its origin. Meanwhile, mixed results are reported for some of the leading Chinese vaccines being developed to fight the pandemic still wreaking global havoc.

State-owned China National Biotec Group becomes the first to get the greenlight for its inactivated virus-based vaccine to prevent COVID-19.

Conditional approval guidelines were issued just days before regulators cleared a vaccine developed by state-owned China National Biotec Group.

Chinese officials do not expect the new strain of coronavirus emerging in the UK to impact the efficacy of inactivated virus vaccines on the cusp of conditional approval. Meanwhile, a new plant is under construction in China for domestically developed mRNA vaccines.