We must learn the lessons of Covid before another deadly disease strikes | Letters

Why has so little been done to make indoor spaces safer, to stop the spread of airborne viruses?

Robin McKie's article rings alarm bells for global health and our failure to control airborne pathogens (What virus will cause the next pandemic? It's flu, say scientists").

We are rightly looking with concern at the spread of H5N1 and the risk it poses to humans, but we have still not applied the hard-won lessons learned from Covid19. While all agencies and experts now (belatedly) admit to Covid's airbornespread, very little has been done to make indoor spaces safer forus all, and the clinically vulnerable in particular, for whom shops, workplaces, restaurants, and even clinical settings have become high-risk areas.