Immune system offers the body protection against disease. There are three types of immunity: innate, adaptive and passive. Immunisation is the process whereby a person is made immune or resistant to an infectious disease typically by the administration of

vaccine which stimulates body’s own immune system. To protect the person from diseases complete

immunization is defined as child has received BCG

vaccination against TB, 3 doses of DPT to prevent Diptheria, Pertusis and Tetanus, at least 3 doses of Polio vaccine and 1 dose of Measles vaccine.

Immune response to antigens is mounted by B (humoral immunity) and T cells (cell mediated

immunity) and their subjects to produce specific

antibodies. Immunisation is world’s most successful and cost effective public health interventions and saves

millions of life each year and reduce child morbidity and mortality. There are 20 millions unvaccinated children in the world. It is a matter of great pride that

immunsation work has become most successful in Bangladesh and our honourable Prime Minister has received Vaccine Hero Award from UNO.

Appropriate strategies should be devised to enhanced health information and accessibility for full

immunization coverage especially for Rohingas. It may be mentioned that Expanded Programme on Immunisation (EPI) was initiated by WHO in 1974. We should remember that live vaccine should not be given to pregnant women or immunosuppressed or in the presence of acute infections. Besides, Hey fever, Asthma, Sickle cell disease, Topical steroid therapy, Antibiotic therapy, Prematurity, chronic heart or lung disease

including TB is not contraindication to immunization.