Delhi reported 22 confirmed cases of influenza H1N1 or (swine flu) on Sunday, taking the total number of persons affected with the disease to 643.
The total number of confirmed cases reported across the country was 128, taking the toll to 3,881.
Four deaths were reported across three states during the day.
With that the number of deaths shot up to 93.
Out of 128 new cases, two have been imported and the rest are all indigenous ones.