The average number of influenza patients per monitored medical institution has exceeded 1.0 in all 47 Japanese prefectures, signaling a nationwide flu outbreak, a health ministry announcement showed Friday. The ministry said that the number of flu patients at some 3,000 regularly monitored institutions across the country came to 7.17 on average in the week through Sunday.
While the figure was slightly lower than 8.48 the previous week, a ministry official said, “The decline may be temporary, given trends in previous years.”