Nigeria, May 29 -- The Nigeria Centre for Disease Control and Prevention (NCDC) has warned healthcare workers nationwide to heighten surveillance and preparedness for Ebola Virus Disease (EVD), citing a "high" risk of importation into Nigeria due to ongoing outbreaks in the Democratic Republic of the Congo (DRC) and Uganda.

The agency, however, said Nigeria has not recorded any confirmed Ebola case linked to the current regional outbreak as of 28 May.

In a public health advisory issued on Thursday, the NCDC said the World Health Organisation's (WHO) declaration of the outbreak as a Public Health Emergency of International Concern (PHEIC), rising infections in neighbouring African countries, and increased cross-border movement have raise...