An anti-airborne-virus public building programme would risk becoming another Maginot Line - generals preparing for the last war. Climate change means the infrastructure might need to cope with insect-vectored disease, extreme wind storms, snow loading on roofs, flash flooding, forest fires, breaks in transport and communication links from sea level rise and storm surges, breached contaminant stores... the safer option is to hold back on massive investment until we know what we're dealing with.

Better not to destroy what we already have. Ols schools work okay and are flexible to upgrade. It's like trees - old trees soak up far more carbon than young ones; cutting and replanting is always nett destruction.