The news that a nurse in Spain has become the first person to contract Ebola outside the outbreak zone in West Africa has raised concerns that it might happen in Japan.

However, the nation has a system in place that could handle potential patients safely, a senior official at the National Institute of Infectious Diseases said Tuesday.

Although Japan has not yet had to deal with an actual case of infection and therefore lacks Ebola-specific procedures to diagnose and treat it, Masayuki Saijo, head of one of the institute's virology departments, said his team has handled suspected cases that turned out to be negative.