Step 1: Understanding the Question:
The question asks to calculate the required number of Urban Primary Health Centers (UPHCs) for a specific sub-population (slums) based on current health norms in India.
Step 2: Key Formula or Approach:
The National Health Mission (NHM) and Urban Health norms specify:
1. One UPHC is established for every 50,000 urban population.
2. Special consideration is given to slums, where the target remains 1 facility per 50,000 to ensure equity.
Step 3: Detailed Explanation:
First, calculate the relevant population size:
Total population of the city = 70,00,000 (70 Lakhs).
Slum population percentage = 30%.
Target Slum Population = $70,00,000 \times 0.30 = 21,00,000$ (21 Lakhs).
Second, calculate the facility requirement:
Population norm per UPHC = 50,000.
Number of UPHCs needed = Total Slum Population / Norm per UPHC.
Number of UPHCs needed = $21,00,000 / 50,000$.
Final calculation:
$210 / 5 = 42$.
Step 4: Final Answer:
To cover a slum population of 21 lakhs, a total of 42 UPHCs are necessary.