World Health Organization director-general Dr. Tedros Adhanom Ghebreyesus said on Wednesday that the WHO is working with its UN partners and manufacturers around the world to buy oxygen concentrators for countries that need them the most after a surge in demand following the rising numbers of COVID-19 cases globally. Oxygen concentrators help patients with severe and critical COVID-19 conditions who can’t breathe normally by providing purified and concentrated oxygen to the blood stream, if left untreated this could lead to organ failure and death.