Early onset of influenza season in Japan has raised health concerns. Experts are puzzled and seeking answers as to why the flu season has struck prematurely. Health officials caution the public, especially the high risk groups, to take precautions, reinforcing the importance of safety measures, timely vaccinations, and early diagnosis. The affected rate and areas are undisclosed.

Japan tends to handle flu seasons very seriously, with businesses and schools often encouraging vaccinations and sick leave to prevent the spread. Wearing masks in public is common as a form of prevention. Health policies prioritize the vulnerable - children, older people, and those with chronic illnesses.

In the US or EU, flu season is also taken seriously, but the approach is different. There's less inclination towards wearing masks and the emphasis is more on personal hygiene and vaccination. There is, however, a similar focus on protecting vulnerable populations. Overall, the severity of an early flu season would be handled with the same grave concern.