A client presents to the emergency department with nausea, vomiting, and diarrhea. While obtaining the history and physical assessment, the nurse discovers that the client's significant other is recovering from COVID 19. After obtaining a nasal swab to test the client for COVID 19, which action is most important for the nurse to take?

Start an IV infusion for antiviral drug to be administered for positive COVID 19 test results.

Institute droplet precautions, place client in a private room, and keep the door closed.

Counsel family members to monitor for illness symptoms for 2 weeks after last contact with patient.

Explain to the client to inform others that they may have been potentially exposed in the last 14 days.