You are presented with a paragraph from a COVID-19 literature. Classify the topics of this piece of text by choosing from the following categories:

- Epidemic Forecasting: The content relates to predictions about the spread of COVID-19.
- Treatment: The paragraph discusses therapeutic methods or medication for COVID-19.
- Prevention: The content covers measures to prevent the spread of COVID-19.
- Mechanism: The paragraph explains the biological mechanisms of the virus.
- Case Report: The content is a report of a COVID-19 case.
- Transmission: The paragraph discusses how COVID-19 is transmitted.
- Diagnosis: The content is about diagnosing COVID-19 in individuals.

Your classification should be provided as an element within a JSON array. The array should be formatted with topics enclosed in double quotes and separated by commas, following the JSON format, for example: ["Topic1", "Topic2", ...]. Include all applicable topics within the array. Your output should be a valid JSON array, and no additional text should be included in your response.

Article:

COVID-19 highlighted the role registered nurses (RNs) have in our healthcare system. The shortage of equipment plus an overwhelming demand for nursing care placed significant stress on nurses. The physical and emotional toll of caring for COVID patients and not having an adequate number of nurses in many cases placed many nurses in harm's way. Despite some healthcare systems reporting significant profits during COVID, few nurses benefited financially. ICU nurses found themselves assigned to three or more patients. Having a defined RN to patient ratio is an urgent need. Pass efforts to mandate via Federal legislation ratios have failed largely due to hospitals' opposition. California has had mandated RN to patient ratios since 2011. Their experience has proven that patient outcomes improve as well as nurse retention. Hospitals' decrease has largely offset the impacts of hospitals' net revenue by decreasing acquired infections, reducing the 30-readmission rate, and improving patient satisfaction scores. As documented in recent Harris polls, the consumer appears ready to support nurses, with nurses enjoying significant public support. The political climate for such change is favorable compared to the past. The Yoder-Wise Planned Policy Change illustrates how Federal legislation mandates RN to patient ratios is achievable.
["Prevention"]