WHO Director-General Tedros Adhanom Ghebreyesus (C) speaks at a daily briefing in Geneva, Switzerland, on March 5, 2020. COVID-19 is not a pandemic for now although there are very concerning signs, the chief of World Health Organization (WHO) said here on Thursday, expressing his deep concern about the spread of the coronavirus into an increasing number of countries with weaker health systems over the past few days. [Xinhua/Chen Junxia]