TOKYO—Japan announced it will ease border controls beginning Monday for fully vaccinated travelers excluding tourists, responding to requests from the business community following a rapid decline in infections. Everyone entering Japan must be fully inoculated with COVID-19 vaccines that are recognized by the Japanese authorities. Those eligible include travelers on short-term business visits of less than three months, as well as longer term visitors including foreign students and workers on so-called technical internship programs, with a 14-day quarantine requirement. Schools and companies sponsoring them are required to submit documents detailing their activities and how they will be monitored. The 10-day self-isolation for Japanese citizens and foreign nationals with reentry permits will be shortened to three days. Japan shut its borders to virtually all foreign visitors in January, except for those with special permits and for humanitarian purposes. Daily cases have sharply fallen since September. About 73 percent of the population …