Immunization
is the process through which the body acquires resistance against a specific
disease. Naturally the body has an immune system which comprises of white blood
cells that fight various infections that attack the body. White blood cells are
part of the blood components. The white blood cells are composed of leucocytes,
monocytes that fight infections in the body. There various ways in which the
body acquire immunity and they include the natural acquired immunity and
artificial acquired immunity. Natural acquired immunity occurs when an
individual gets infected with a microbe causing a disease in the body. The body
immune system fights the infection or disease caused by the microbes. The
body's immune system then develops antibodies against the microbes causing
disease. If in the future the same microbe attacks the individual's body, the
body's immune system fights against it before it develops into a disease.
Children acquire natural immunity from their mothers through transfer of
antibodies while still in the uterus through the placenta or during
breastfeeding. Artificial acquired immunity is given to individuals through
administration of vaccines. Vaccines are made up of killed or weakened form of
microbes that causes a disease. The vaccines are termed safe since they are not
capable of causing a disease not unless in the case of a person with immune compromised
system for example an individual with Hiv/Aids with a low CD4 count. Vaccines
are introduced in the body through oral administration or subcutaneous or
muscular injections on specified areas that include the deltoid, glutei and
thigh areas. The weakened/killed microbe causing disease is introduced into the
body through the various mode entries. The body on sensing a possible infection
launches an attack through the immune system, this results into the body
developing antibodies against the introduced microbes. In future when the body
is faced with an infection of the microbes introduced, the body fights the
microbes before they cause the disease in the body.
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