The World Health Organisation (WHO) announced on 17th May this year that an Ebola disease outbreak had occurred in the Democratic Republic of the Congo (DRC) and Uganda in Africa, which constituted a Public Health Emergency of International Concern. On the same day, the HKSAR Government activated the Alert Response Level, the lowest under the three-tiered response in the Response Plan, to safeguard public health. Based on public health considerations, the HKSAR Government also issued a Red Outbound Travel Alert for the DRC on May 21 and urged Hong Kong residents to avoid non-essential travel there.