"I was impressed with the generosity and support provided by Russia at a time when [Syrian citizens] needed it most," Hoff told RIA Novosti.
Hoff said that the estimated number is 50,000 people, but that she didn't believe that the number is that high.
She pointed out that the WHO is set to step up humanitarian aid to people evacuated from East Aleppo. According to Hoff, about 39,000 people have been registered in temporary shelters. However, the majority of people choose not to stay there as the conditions are not very good.
"In Aleppo province, there are about 75,000 internally displaced people that we need to help," Hoff elaborated.
On Friday, the Russian Defense Ministry announced that Aleppo was now under full government control with the Syrian army operation to retake the eastern districts completed. Civilians and militants were leaving the city amid a ceasefire agreement between the remaining pockets of resistance and government forces.