Some scientists think we could all soon store a supply of rapid tests or "viral thermometers" in the medicine cabinet to help diagnose sickness far more quickly."We have drugs which can reduce the severity of influenza, for example, but they need to be taken very soon after infection," says Prof Alex Edwards. "You might be able to have a system where a vulnerable person can get tested and get the drugs immediately. It would be great to see a positive outcome like that from this very negative pandemic."