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Anti-vaccine campaigners in the United States have come out in force against the three coronavirus vaccines that have proven effective in trials, amid a worsening pandemic that has killed more than 270,000 Americans and infected more than 13,7 million.

Antonio Villafranca, research coordinator and co-head of the Italian Institute for International Political Studies' Europe and Global Governance Centre, said when the coronavirus outbreak hit Europe he and his colleagues were asked by European governments to look at economic remedies.

Another reason could be that there aren't many people who require such a visa, said Christina Wang, a professional who specializes in the Chinese visa service in Shanghai.

Apart from the main body of the project, the Chinese constructor also built schools, roads, bridges, wells and water channels for the locals to make their lives more convenient, he said.

Apart from commercial operation of medium-and-low speed maglev lines, China is fostering research on variants of maglev trains. A prototype of a high-speed maglev train with a design speed of 600 kph was unveiled in Qingdao, Shandong province, in May. The engineering prototype is scheduled for 2020 and is expected to finish integrated verification in 2021.