Individuals need to educate themselves on how to protect themselves from contracting the virus and if they get it, educate themselves on how to avoid spreading the virus. They would need to take these precautions.
Alcohol hand sanitizer is to protect yourself.
A mask is mostly to prevent infecting other people.
If you had to, would you be ready to self-isolate yourself for two weeks?
This is in the end the only solution, to avoid getting infected. If you do get infected you might need treatment, but it is hard to tell from a flu at first. Sneezing and coughing spreads the virus which can live in the place for up to two days (commonly 2 hours).
If your country is still without reported cases, you should prepare to have enough food etc in your home for a month or so, buy it now before they order everyone to stay home.