Avoid crowded places, they say, but many of us have to work in grocery stores and large retail businesses. we cannot avoid coronavirus, and thus we are at increased risk. what can we do then?

Universal precaution: Medical personnel also have to work among sick persons. To avoid infection, sanitize surfaces frequently, use a good quality mask, wear gloves, avoid touching yourself while wearing these items, wash hands frequently and take good care of yourself (sleep, nutrition, exercise). Remove clothes carefully and shower on returning home.