Lagos - Regional grouping the Economic Community Of West African States (ECOWAS) has suspended momentarily meetings that could bring representatives of its member states together.
ECOWAS Commission vice president Toga Mcintosh said that the management of the 15-nation grouping has decided "to suspend all meetings that will bring us together coming from our various countries".
"Except if the mission is so essential and well guided, we will approve. All other missions, meetings will be suspended for a while."
The suspension is initially for the whole of August, after which the situation will be reviewed for further action, an ECOWAS spokesman, Sunny Ugoh, told AFP.
The Lagos liaison office of the Economic Community of West Africa States (ECOWAS) has been temporaily closed down and fumigated, Mcintosh told the meeting.
It was clear that some ECOWAS officials had primary contact with Sawyer in the organisation's Lagos office when he arrived, he also said, but gave no further details.
The Nigerian health minister said Nigeria will begin to screen all outbound air travellers and if they are found to have the Ebola virus, they will be asked to stay back.
"We don't want them to go to other countries and cause problems for those countries.... We can't allow you to take it (Ebola virus) to your country and cause problems for them."