The Covid-19 pandemic in the United States has marked another grim milestone, with confirmed cases topping 25 million. Xinhua finds out why the country’s Covid-19 cases continue to increase.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
