Vaccination is the most effective method of preventing infectious diseases;widespread immunity due to vaccination is largely responsible for theworldwide eradicationofsmallpoxand the elimination of diseases such aspolioandtetanusfrom much of the world.

OBJECTIVES: Vaccination is aneffectiveway to reduce morbidity and mortality related to infectious diseases

1.Live-attenuated vaccines

Live vaccines use a weakened (or attenuated) form of the germ that causes a disease.Live vaccines are used to protect against:

Measles,mumps,rubella(MMR combined vaccine)

Rotavirus

Smallpox

Chickenpox

Yellow fever

2.Inactivated vaccines

Inactivated vaccines use the killed version of the germ that causes a disease.

Inactivated vaccines usually don’t provide immunity (protection) that’s as strong as live vaccines. So you may need several doses over time (booster shots) in order to get ongoing immunity against diseases.

Inactivated vaccines are used to protect against:

Hepatitis A

Flu(shot only)

Polio(shot only)

Rabies

3.Toxoid vaccines

Toxoid vaccines use a toxin (harmful product) made by the germ that causes a disease. They create immunity to the parts of the germ that cause a disease instead of the germ itself. That means the immune response is targeted to the toxin instead of the whole germ.

Like some other types of vaccines, you may need booster shots to get ongoing protection against diseases.

Toxoid vaccines are used to protect against:

Diphtheria

Tetanus

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