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:

During the COVID-19 pandemic, the attainment of the required hospital workforce is extremely challenging; with a requirement to create surge capacity for COVID-19 care and to ensure and sustain regular hospital care. The ongoing COVID-19 pandemic demands the deployment of a flexible physician workforce for the cohort wards in hospitals. This can be successfully be organised and managed if some key principles are followed. Physicians have the ability to practice their general, not specialised, medical skills. COVID-19 specific medical education, re- and upskilling can be necessary. This approach for the future physician workforce may be applicable in several national healthcare systems. Solidarity, flexibility and transparency within the medical staff are the cornerstones for a successful deployment of a physician flex pool in a hospital dealing with a pandemic.
["Prevention"]