Expert: Global vaccination imbalance still needs attention
The WHO says 2022 must be the year the pandemic ends, but some experts are not optimistic. The Omicron variant has spread to over 100 countries and regions. The world has called for more fairness in global vaccination. Professor Wu Zhiwei, director of the Center for Public Health Research at the Medical School of Nanjing University, talks about what needs to be done to achieve the goal.