After nearly 100 days without new local patient Vietnam had all but claimed victory in the novel coronavirus. Now the masks on the back, like the works of the government to contain a sudden flare-up in case of community infections after officials reported 15 new cases in three days from the central coastal region. The surprising news, the virus begins Friday with a suspected case, he stressed the unpredictable nature. Vietnam joins a number of other regions to control outbreaks appeared, including China, Germany, South Korea and Hong Kong, unknown in the new cluster fight of origin in an effort to head off outbreaks of anger. Vietnam is every weapon in their arsenal of its effort, the new expansion in Danang throws to contain. Authorities announced four cases over the weekend and 11 more on Monday night, which were tied to a Danang hospital where patients were treated other viruses. Four of the 11 are medical staff. First case of Vietnam in April was perhaps the most grueling 16 years, and not traveled a 57-year-old grandfather, who had been about a month in Danang in other provinces. This has raised concerns that Vietnam, which has a total of 431 reported a relatively low infection, may be susceptible to imported cases of people crossing the border illegally in the country. The Nguyen Xuan Phuc Prime Minister has ordered tighter border controls and immigration. Police have charged a series of arrests of Vietnamese and Chinese with shepherd the people in the country illegally. Vietnamese health officials, like their colleagues or elsewhere, wonder about the source of new infections. Hong Kong, for example, had enjoyed a few local cluster of three months before a surprise resurgence in recent weeks, which until now has turned into its worst wave. The infections of unknown aetiology of new cases remains high at around 40%, which continue the hidden transmission chains. So the Vietnamese leaders do what has been achieved in the past: to provide fast and blunt the block-like actions. Le Danang authorities arrest two hospitals where the two victims attended and ordered the patients, medical staff, nursing staff and family members – about 7,000 people in total – up to 14 days to be quarantined, local media reported . A third hospital was also blocked, VnExpress reported. The city was an order of stay-at-home for 15 days for six of the eight districts on Tuesday, the local government said on its website. Residents are forbidden to go out for essential reasons, such as the purchase of food and medicine, working for such emergencies or in factories. Residents must keep a distance of two meters apart. In addition, the operations are not limited to private vehicles. And the government announced on Tuesday that all national transport passenger flights to and from Danang suspended for 15 days. Meanwhile, other parts of the country are taking precautions. In Hanoi, about 790 kilometers north of Danang, officials reissued antivirus mandates – including masks in public areas lead. (Updates with wave in Hong Kong, elsewhere, Danang air suspension) -With assistance from May Ngoc Chau Hoang Khanh Photo copyright AFP / Getty Images.