Foreign ministry says trips to four countries hit by Ebola fever outbreak - Liberia, Guinea, Sierra Leone and Nigeria - should be put on hold.
Nigerian President Goodluck Jonathan and other West African leaders will attend the talks in Paris to discuss threat from Islamist group.
Paris joins United States and Britain in offering to help rescue more than 200 schoolgirls kidnapped by Islamist militant group Boko Haram.
The French president, the only Western leader invited to Nigeria's centenary celebrations, pledged to support fight against terrorist groups.
French president Francois Hollande announces the release of priest who was kidnapped in November in Cameroon, near Nigerian border.
Francis Collomp, 63, who was kidnapped on December 19, 2012, by the Ansaru Islamist group, reportedly escaped during a shoot-out.
Banned Nigerian Islamist group claims it was they who kidnapped Georges Vandenbeusch from his home near Koza in northern Cameroon.
In a video released by his captors, Francis Collomp, kidnapped last December, asked for French and Nigerian help in securing his release.
France says it paid no ransom for the release of the three adults and four children kidnapped in February, who are reported to be in good health.
Recording shows man whose four children were kidnapped with him and other family members in Cameroon saying: 'We lose strength every day'.
French family of seven kidnapped in Cameroon last week appeared in video posted online by captors demanding imprisoned Islamists be freed.
After reports from a French government minister that they had been rescued, the fate of a family of seven kidnapped in Cameroon remains unclear.
Nigerian pirates are believed to have taken control of a French-owned tanker with 17 crew which went missing off Ivory Coast at the weekend.