Palestinian boy Ahmed Al-Deeb, who has severe facial burns, is fitted with a 3D transparent face mask, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem TPX IMAGES OF THE DAY 

Palestinian man Ahmed Al-Natour, 34, who has severe facial burns and was provided a 3D transparent face mask by Medecins Sans Frontieres (MSF), gestures as he holds his child at his home in Gaza City February 9, 2021. Picture taken February 9, 2021. REUTERS/Mohammed Salem TPX IMAGES OF THE DAY 

A physiotherapist scans the face of Palestinian boy Ahmed Al-Deeb, who has severe facial burns, to provide him with a 3D transparent face mask, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

Palestinian boy Ahmed Al-Deeb, who has severe facial burns, waits to be fitted with a 3D transparent face mask, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

A physiotherapist works on a laptop as he designs 3D transparent face mask for Palestinian boy Ahmed Al-Deeb, who has severe facial burns, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

Palestinian man Ahmed Al-Natour, 34, who has severe facial burns, is reflected in a mirror as he wears a 3D transparent face mask provided by Medecins Sans Frontieres (MSF), at his home in Gaza City February 9, 2021. Picture taken February 9, 2021. REUTERS/Mohammed Salem 

A physiotherapist scans the face of Palestinian boy Ahmed Al-Deeb, who has severe facial burns, to provide him with a 3D transparent face mask, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

A physiotherapist prepares to put a 3D transparent mask on the face of Palestinian boy Ahmed Al-Deeb, who has severe facial burns, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

The mother of Palestinian boy Ahmed Al-Deeb, who has severe facial burns, looks on as he waits to be fitted with a 3D transparent face mask at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

Palestinian boy Ahmed Al-Deeb, who has severe facial burns, waits to be fitted with a 3D transparent face mask, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

Palestinian boy Ahmed Al-Deeb, who has severe facial burns, is reflected in a mirror as he waits to be fitted with a 3D transparent face mask, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

Palestinian boy Ahmed Al-Deeb, who has severe facial burns, waits to be fitted with a 3D transparent face mask, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

Physiotherapists put a 3D transparent mask on the face of Palestinian boy Ahmed Al-Deeb, who has severe facial burns, at Medecins Sans Frontieres (MSF)'s clinic in Gaza City February 8, 2021. Picture taken February 8, 2021. REUTERS/Mohammed Salem 

Palestinian patient Ahmed Al-Natour, 34, who has severe facial burns, is reflected in a mirror while wearing a 3D transparent face mask provided by Medecins Sans Frontieres (MSF), as his daughter looks on, at their home in Gaza City February 9, 2021. Picture taken February 9, 2021. REUTERS/Mohammed Salem