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A video has captured the emotional moment a classroom full of children cheer on a disabled boy when he walks for the first time.
Six-year-old David Matos de Souza suffers from poliomyelitis, an infectious disease caused by a virus that attacks the spinal cord and causes paralysis.
The boy had always needed a wheelchair to move, but on this day his friends helped him take a chance.
His teacher recorded the video of him walking slowly between tables, holding on to each one as he passes.
Once he reaches the end of the room he turns around and walks several steps to meet his teacher in open arms.
David's mother Roseley Matos de Souza told Brazilian media she was very emotional when she watched the video, which has since gone viral.
"After so many years of hardship it's indescribable how I feel now. The one thing I want to say is if there are other mothers in a similar situation, never give up on your children."
Since taking those first steps, David is now determined to keep practising to eventually give up his wheelchair.