The U.S. Centers for Disease Control and Prevention is dispatching a dozen additional staff and sending some of them closer to the area of the outbreak.
The airline has been operating for more than 75 years, and it's become Africa's largest airline in terms of destinations, passengers carried and revenue. It suffered a blow with a deadly crash.
The announcement Wednesday afternoon follows decisions by many other countries to ground the planes in the wake of Sunday's deadly crash of an Ethiopian Airlines flight.
The three-story structure crumpled into a pile of concrete slabs Wednesday. About 100 nursery and primary school students are believed to have been inside. At least 37 people have been rescued.
Scores of schoolchildren were in a four-story building in Lagos, Nigeria, when it collapsed. Officials say they have pulled some survivors, but they know that some schoolchildren died.
A United Nations investigation finds at least 535 men, women and children were killed in December amid a conflict between the Banunu and Batende communities in the Democratic Republic of the Congo.
The president's decision that he wouldn't seek a fifth term brought joy to the streets. But students resumed protests after the ailing leader delayed elections, meaning he stays in power indefinitely.
"I particularly understand the message given by youth, in terms of anxiety and ambition for their own future and that of the country," said 82-year-old President Abdelaziz Bouteflika.
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