The Kassena-Nankana District of the Upper East Region has recorded lower Infant mortality rate from 137.50 per 1,000 live births to 104.44 as at last year.

The drop has been attributed partly to the intervention provided by the Navrongo Health Research Centre (NHRC).

The center started as a field station in 1989 to investigate the impact of repeated large doses of Vitamin A on child survival in the Kassena-nankana District, Mr Dennise Chirawura, acting Head of the Navrongo Demographic Surveillance System (NDSS) of the center said at activities marking this year's national immunization day against polio.

The NDSS is a continuous population registration system instituted in 1993 by the registration of the NHRC to provide a platform for assessing population dynamics and impact of health intervention in the district.