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 disease 2019 (COVID-19) has led to a global pandemic with nearly 158 million cases worldwide and 3.3 million deaths. Due to its easy transmissibility and high virulence, it has caused an overwhelming number of infections leading to a near-collapse of the healthcare infrastructure in some countries. In this review, we will focus on cases of Severe COVID-19 requiring mechanical ventilation, as well as advanced rescue therapy in the form of extracorporeal membrane oxygenation (ECMO).
["Treatment"]