I don't know. It seems the media coverage (sometimes bordering on fear mongering) had most people wearing masks, using hand sanitizer, etc. Enforcement of policies like masking were not widespread in most places, yet most people obeyed because of what they saw on the news. This is the method the government relies on for all forms of emergency preparedness - they present documents/resources for people to use, then in times of emergency the media diseminates them to the public. This generally works fine for stuff like storms, escaped convicts, etc.