CHNN

• 1.2 Immunization is a proven tool for controlling and eliminating life-threatening infectious diseases and is estimated to avert between 2 and 3 million deaths each year.It is one of the most cost-effective health investments, with proven strategies that make it accessible to even the most hard-to-reach and vulnerable populations.
• 2.2.2 PASSIVE - IMMUNITY

  • Is protection by products produced by an animal or human and transferred to another human, usually by injection.
  • often provides effective protection, but this protection wanes (disappears) with time, usually within a few weeks or months.
  • is the transfer of active humoral immunity in the form of readymade antibodies, from one individual to another.
• 3.

  • A vaccine helps the body’s immune system to recognize and fight pathogens like viruses or bacteria, which then keeps us safe from the diseases they cause.
  • protect against more than 25 debilitating or life-threatening diseases, including measles, polio, tetanus, diphtheria, meningitis, influenza, tetanus, typhoid and cervical cancer. 
  • There are many types of vaccines, categorized by the antigen used in their preparation.
  • Their formulations affect how they are used, how they are stored, and how they are administered.
• 3. TYPES OF VACCINE

  1. LIVE – ATTENUATED VACCINES (LAV)

  2. INACTIVE VACCINES (Killed Antigen)

  3. SUBUNIT (Purified Antigen)

  4. TOXOID (Inactivated Toxins)
• 3.1

  • LIVE – ATTENUATED VACCINES (LAV)Available since the 1950s, live attenuated vaccines (LAV) are derived from disease- causing pathogens (virus or bacteria) that have been weakened under laboratory conditions.
  • They will grow in a vaccinated individual, but because they are weak, they will cause no or very mild disease.