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:

Coronavirus 'long-haulers" currently represent a significant public health concern. Recent reports suggest that persistent effects of COVID-19, such as fatigue, dyspnea, chest pain, anxiety, depression, arthralgia, may last for months and lead to a decline in quality of life. Risk factors for long COVID are still not very well understood. Survivors suffer from ongoing symptoms. This new entity highlights the need for a multidisciplinary approach that would enable closer monitoring of affected patients and implementation of measures that could reduce the impact of the pandemic on the overall patient wellbeing after the resolution of acute symptoms.
["Diagnosis"]