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:

India's nationwide lockdown to curtail the transmission of Covid-19 has given rise to concerns over the health system's response to maternal and child health (MCH) services. This paper aims to understand the challenges faced by pregnant women seeking institutional care during the lockdown. We conducted a qualitative content analysis of 54 online news reports, published in English and Hindi, between 25 March 2020 and 31 May 2020. They covered cases across 17 states in India and 16 maternal deaths. Three broad thematic categories of challenges for pregnant women emerged from the analysis: 1) physical access to health facilities, 2) admission to health facilities, and 3) lack of respectful maternity care during the lockdown. In conclusion, strengthening health systems and incorporating MCH into the Covid-19 response is imperative. Failure to provide quality MCH services during the lockdown has implications for the continuum of women's care, maternal mortality, and human rights.
["Prevention"]