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:

We provide a situational update on COVID-19 in Ghana, the seventh African country reporting the most cases. Some modifications occurring within the health system to curtail the outbreak and its potential impact on the delivery of antenatal care services are also highlighted. With the discovery of the Delta variant in Ghana, the current attention is to prevent a third wave of infection, and also control and manage existing cases. Efforts to procure vaccines, vaccinate special populations and sensitize the public on the implications of vaccine hesitancy are ongoing. Amidst these activities, we suggest some innovations and countermeasures to safeguard primary healthcare services and potentially reinvest efforts towards achieving the sustainable development goal three within the context of maternal healthcare, citing examples specific to developing countries.
["Prevention"]