Nikkei wrote that the Health Ministry is planning to decide as early as this week to approve antigen tests using saliva that can detect the new coronavirus in 15 to 30 minutes and allow them to be covered by public health insurance in preparation for a possible second wave of infection in Japan. The paper wrote that the ministry approved public health insurance coverage of antigen testing using nostril mucus on May 13 and the Japan Agency for Medical Research and Development confirmed recently that antigen tests using saliva can produce test results at the same level of accuracy as those using mucus. The paper wrote that the medical test kit producer Fujirebio is currently producing 780,000 antigen test kits per month.