The second serosurvey was conducted in the same 700 villages and wards from 70 districts from 21 states which were covered during the first survey
दुसरे सर्वेक्षण देखील पहिल्या सर्वेक्षणात समावेश असलेल्या 21 जिल्यातील 70 जिल्ह्यांमधील 700 गाव आणि वार्डातच करण्यात आले.