Difficulty breathing is one of the most common severe COVID-19 symptoms, and as photos of people waiting in long lines for oxygen canisters in India and elsewhere attest, supplies of medical oxygen are far from adequate everywhere in the world.
Difficulty breathing is one of the most common severe COVID-19 symptoms, and as photos of people waiting in long lines for oxygen canisters in India and elsewhere attest, supplies of medical oxygen are far from adequate everywhere in the world.
