Dhaka: Aid workers are bracing for a possible outbreak of the coronavirus in one of the world's largest refugee camps in Bangladesh, with officials warning that containing the disease among more than 1 million tightly packed Rohingya Muslims will be a daunting task. With about 40,000 people per square kilometer (103,600 per square mile) living in plastic shacks side by side, which is more than 40 times the average density of Bangladesh, the refugees are dangerously exposed to the virus.

Each shack is barely 10 square meters (107 square feet) and many are overcrowded with up to 12 people. There have been no reported cases of infection in the camps yet, but officials remain concerned. The U.N. is not doing any testing for the virus but sends any suspected cases to a government hospital. We are doing our best to protect them, but if the virus breaks out it will be a tough job for all of us, Mohammad Shamsuddoza, the additional refugee, relief and repatriation commissioner of Bangladesh, told The Associated Press by phone from Cox's Bazar on the border with Myanmar, from where the Rohingya have fled a government crackdown. He said the 34 camps are a major challenge despite preparations to provide better health care services.

Mohammad Kamal Hossain, the top government administrator in Cox's Bazar, said foreigners have been banned from frequent visits to the camps unless they are absolutely necessary." They have been instructed to carry on work in a limited scope, he said. A 100-bed isolation ward was built inside the camps and another 200-bed hospital with modern facilities is being deployed in cooperation with the World Health Organization, he said. The U.N. refugee agency said about 1,200 additional beds were being readied just outside the camps at Ukhiya and Teknaf.

Louise Donovan, UNHCR communications officer in Cox's Bazar, said planning was also underway for 1,700 more beds in cooperation with the International Organization for Migration, UNICEF and Save the Children International. Donovan said water and soaps are being widely distributed, and thousands of community health workers including the refugees themselves were being trained.

Others working in the camps are told to spread awareness about the virus. Mosque imams and local leaders have also been engaged. Communications are ongoing through radio spots, video, posters, leaflets and messages in Rohingya, Burmese and Bengali languages, explaining how the virus spreads, how people can protect themselves and their families, symptoms, and care-seeking, Donovan said.

Bangladesh has reported six deaths and 54 cases of COVID-19 amid concerns that the virus could spread in the South Asian country through Bangladeshis who have returned from Italy and other places struggling with the disease. Many of those returning did not respect social distancing or stay in self-quarantine.

One reason for the low number of reported cases could be insufficient testing as health care facilities initially lacked testing kits. Bangladesh, a nation of 160 million, is currently under a lockdown until April 11 to help contain the virus, and troops are out to enforce the stay-at-home rules.