Heavy traffic and crowded tourist attractions during the extended holidays  could provide an impetus for COVID-19 to further spread. As a countermeasure, people who had traveled to crowded places during holidays, were advised to conduct self-health management for 14 days; avoid public places;  wear a mask in public; and telecommute whenever possible. Please call the toll-free 1922 hotline if you feel unwell, and inform the physician about your travel history. Please call the toll-free epidemic prevention hotline 1922 at the first sign of an illness, and inform the healthcare providers about travel history.