The major tasks were carried out including Finalization of sampling methodology with demarcation of enumeration areas (EA), making sketch map of EA, listing of households with in the EA and selection of households for interview; Reviewing, pretesting and finalization of questionnaires; Recruitment and training of field personnel; Programming for data collection using ODK; Data collection operation with quality control checking; Collection of anthropometric measurements (height and weight) and blood pressure, and blood samples; Establishment of field level laboratory in Chattogram for processing and preservation of blood samples; Transportation of blood samples from Chattogram to icddr by maintaining the cold chain; Testing of blood (CBC) from the local clinic and submission of report to ICDDR; and Data processing including cleaning, internal consistency checking and submission to ICDDR. This survey was conducted in 3 areas including 2 areas in the urban non-slum of Dhaka and Chattogram, and one urban slum area of Chattogram. The non-slum of Dhaka are adjacent areas of Korail, Mirpur, and Dhalpur; and Chattogram are adjacent areas of Akbar Saha and Paschim Piroj Saha. The urban slums of Chattogram are Shaheed lane and Akbar Shah Kata slums. A total of 3000 households were completed in the study including 1000 households in each of the three selected areas. Among the completed households, about 5515 adults (≥18 years), and 1222 adolescents (10-17 years) were completed through face to face interviews in the study. Besides, about 1311 blood samples were collected in the study including 990 blood samples from adults and 321 blood samples from adolescents.