New Delhi: Minors aged between 5 and 17 are most exposed to the novel coronavirus in Delhi, according to a serological survey conducted in the city this month.Conducted between August 1 and August 7, the survey, second in the city, showed that 29.1 percent of the population in the national capital has now developed antibodies against SARS CoV-2.As many as 15,000 people from four age groups participated in the survey -- around 25 percent of them below 18, 50 percent between 18 and 50, and the rest aged above 50.A prevalence rate of 34.7 percent was found among the participants aged between 5 and 17, the survey results show.As many as 31.2 percent of the people aged above 50 have recovered from COVID-19, it shows.Among those in the 18-50 age.