【明報專訊】The COVID-19 global pandemic has become more and more severe. Quite a lot of people have pinned their hopes on vaccines. China's Ministry of Science and Technology said last week that some mainland vaccines would complete the third clinical trial by the end of the year. They could be put into full use after getting approved. There is a lack of co-operation in the international community regarding the fight against the pandemic, and conflicts between developed and developing countries are sharpening. Even if vaccines can be rolled out next year successively in Europe and America, most of them will be supplied to Western developed countries. Other regions probably will have to rely on Chinese vaccines. This is the reality that all must face, and Hong Kong is no exception. If such a situation presents an opportunity for China to pursue ''vaccine diplomacy'', to a certain extent the West's vaccine nationalism will be the making of it.