In a photo from Guinea’s previous Ebola outbreak, medical staff clean their protection suits in March 2015 in Conakry, Guinea. Guinean authorities declared a new Ebola outbreak Sunday.

Medical staff clean their protection suits as part of the fight against the Ebola virus on March 8, 2015 at the Donka hospital in Conakry. More than 9,700 people have died of the disease since the west African epidemic emerged in southern Guinea in December 2013, with nearly 24,000 people infected, according to the World Health Organization. AFP PHOTO / CELLOU BINANI (Photo by CELLOU BINANI / AFP) (Photo by CELLOU BINANI/AFP via Getty Images)