People pass by a poster warming about a new coronavirus at Suseo Station in Seoul, South Korea, Friday, Jan. 24, 2020. China broadened its unprecedented, open-ended lockdowns to encompass around 25 million people Friday to try to contain a deadly new virus that has sickened hundreds, though the measures' potential for success is uncertain. The sign reads "Prevention." (AP Photo/Ahn Young-joon)

Use Information This content is intended for editorial use only.
For other uses, additional clearances may be required.