Hong Kong reported 986 new coronavirus infections on Thursday as authorities scramble to contain an outbreak which medical experts warn could see 28,000 daily cases by the end of March. The rise in cases, up 10-fold since Feb. 1, is proving to be the biggest test for the global financial hub’s “dynamic zero” policy of virus suppression. Leader Carrie Lam said she was “deeply sorry and anxious” as residents, including elderly and children, queued for hours at testing centers and to enter isolation facilities after daily infections doubled to a record 1,161 cases on Wednesday. Experts have said Hong Kong’s strategy looks increasingly unsustainable with cases ballooning. Writing on her official Facebook page, Lam said the government was working hard to enhance capacity and that the fast-spreading infections, hitting places like elderly care homes, were the last thing she wanted to see. “Citizens have to wait for a long time …