TB prevention and immunization in pediatrics

Tuberculosis (TB) is one of the main contributors to global mortality and morbidity. Prevalence of TB is more in developing countries. It is one of the airborne diseases that has always been a major health problem. It is caused by organisms of the Mycobacterium tuberculosis (MTB) complex affecting different organ systems. The proverb prevention is better than cure best applies to TB and it has been practiced from ancient periods. However, modalities of prevention have varied much depending upon the advancement in research and technology. TB preventive practice reduces the load of TB significantly and it was used as the theme for world TB Day for the year 2013. Bacille Calmette-Guérin (BCG) vaccination is one of the modalities to prevent TB and it's been practiced for decades with a lot of modifications from synthesis, schedule and method of administration. BCG mainly prevents serious TB with a less known effect on TB prevention. Other uses of BCG vaccination are being studied. In the modern era, heterologous effects of BCG vaccination have brought BCG once again into the limelight. TB prevention strategies start from basic health education and vaccination. Newer vaccines are under trial to improve the efficacy of TB vaccination and yet to be used for general practice. Prevention and immunization against TB have been modified in immunocompromised children. The concept of drug resistance has to be kept in mind before using anti tubercular drugs without any bacteriological evidence for tuberculosis. National Tuberculosis Elimination Programme (NTEP) focuses on contact tracing and treatment of latent TB infection as a resort to prevent further spread of TB in India. This review article has been authored following an exhaustive examination of the existing literature, with the aim of enhancing comprehension regarding tuberculosis prevention and immunization.