AFB : Acid Fast Bacilli  
  AIDS : Acquired Immune Deficiency Syndrome  
  ARTI : Annual Risk of Tuberculous Infection  
  BCG : Bacille Calmette Guerin  
  C.I. : Confidence Interval  
  CMO : Chief Medical Officer  
  DDG : Deputy Director General  
  DGHS : Directorate General of Health Services, Govt. of India  
  DOT : Direct Observation of Treatment  
  DOTS : Directly Observed Treatment Short-course  
  DTC : District Tuberculosis Centre  
  HIV : Human Immuno-deficiency Virus  
  HQ : Head Quarters  
  ICMR : Indian Council of Medical Research  
  IJTLD : International Journal of Tuberculosis and Lung Disease  
  ILR : Ice-lined refrigerators  
  IUATLD : International Union against Tuberculosis and Lung Disease  
  Lab : Laboratory  
  M.Tuberculosis : Mycobacterium Tuberculosis  
  MGIMS : Mahatma Gandhi Institute of Medical Sciences, Wardha  
  mm : Millimeter  
  MMR : Mass Miniature Radiography  
  NDTC : New Delhi TB Center  
  NTI : National Tuberculosis Institute, Bangalore  
  NTP : National Tuberculosis Programme  
  PHC : Primary Health Center  
  PPD : Purified Protein Derivative  
  PPS : Population proportion to size  
  PTB : Pulmonary TB  
  RNTCP : Revised National Tuberculosis Control Programme  
  SPSS : Statistical package for social sciences  
  SSI : Statens Serum Institute, Copenhagen  
  TB : Tuberculosis  
  TRC : Tuberculosis Research Center, Chennai  
  TU : Tuberculin Unit  
  Viz : Namely  
  WHO : World Health Organization  
  X2 : Chi-square