Hospital policies vary as far as when and how nurses can return to work. Many follow the Centers for Disease Control and Prevention regulations for health care workers, with strategies for a test-based return and one without testing. If tests are not used, workers may return to work after three days without a fever and fever-reducing medications, or if seven days have passed since the onset of symptoms. Otherwise, improvement of symptoms and two consecutive negative COVID-19 tests administered at least 24 hours apart is recommended.