HARYANA : Antibodies against the COVID-19 infection were found in 8% of people in the sero-prevalence survey done in Haryana last month and those living in urban areas and NCR districts were found more affected, Health Minister Anil Vij said on Friday.As many as 850 samples each were collected from 22 districts and the collection was done both in urban and rural areas.Overall, 18,905 samples were collected and the sero-prevalence study showed that the sero-positivity of SARS-CoV-2, the virus that causes COVID-19, is eight per cent in the state, Vij said.He said that the urban population was affected more than the rural population.The sero-positivity observed that in urban areas the rate is 9.59% and in rural areas it is 6.9%, said Vij while.