Victoria, Australia, is the “hardest hit area” for the second outbreak of the new outbreak, the daily mail of the UK reported. Recently, the health department found out that the main cause of the epidemic is related to the shocking behavior of two “bear children”. < p > < p > on August 18, local time, the survey results of hotel isolation project in Victoria showed that 90% of the secondary epidemic cases in Victoria could be traced back to a family of four who once lived in the isolation point of Rydges hotel in downtown Melbourne. The family returned from abroad on May 9 and developed symptoms of infection with the new coronavirus. On May 15, the family was taken to the Rydges hotel for isolation. On May 18, they all tested positive for the virus. < / P > < p > within a week, two security guards and one staff member of the hotel were infected. By mid June, 17 of the hotel’s staff and their close contacts had tested positive for the virus. < / P > < p > Dr. Charles alpren, an epidemiologist with the Victoria Department of health, said there had been an “environmental pollution incident” at the hotel on May 18. According to the Australian Herald Sun, the incident was that two children of the above-mentioned families smeared stool on multiple places of the hotel room during isolation, resulting in the room being unable to live. Dr. alpram pointed out that it was suggested that the security guard should take the family to another room, and some nurses were called to the room. In the process, someone may have been infected with the virus. At present, the investigation on the second epidemic situation in Weizhou is still continuing. In addition to the Rydges Hotel, another hotel in Melbourne, Stamford Plaza, has also experienced a cluster infection, according to Dr alpren. The data showed that 99% of the nearly 1600 genome tests conducted in the past month were related to the Rydges Hotel, and only 12 were from the Stamford hotel itself.