[ExpertScie]

The best example of “Prevention is better than cure” is Vaccination. It is a great tool of immunology which prevents us from various deadly diseases throughout our life.
Below is the detail of its schedule, this may vary depending upon the place you live, the heath of child, the recommendations by doctors, and vaccines types. Today many new vaccines are being given in combinations which prevent from more than one disease at a time.
At Birth :
Hepatitis B: Hepatitis B vaccine (HBV); It is recommended to give the vaccine at birth which is first dose, but may be given at any age for those not previously immunized.
One -Two Months:
Hepatitis B: Second dose should be administered in 1 to 2 months after the first dose.
Two Months:
DTaP: Diphtheria, tetanus, and Acellular Pertussis Vaccine
Hib: Haemophilus influenzae type B vaccine
IPV: Inactivated (Virulence-Killed) poliovirus vaccine
PCV: Pneumococcal conjugate vaccine
Rota: Rotavirus vaccine
Four Months:
DTaP
Hib
IPV
PCV
Rota
Six months:
DTaP
Hib
PCV
Rota
Six months and annually
For various flue like Seasonal influenza, the vaccine is recommended every year for children 6 months and older. Those younger than nine who have been vaccinated in the past might still need two doses if they have not received at least two flu vaccinations.
It's especially important for high-risk kids (those which are more susceptible to diseases) to be vaccinated. High-risk groups include, but not limited to, kids younger than 5 years old, and those with chronic health conditions, such as asthma, circulatory system problems, human immunodeficiency virus (HIV), sickle cell anemia or diabetes,
Six-Eighteen months
Hep B
IPV
12-15 months
Hib
MMR: Measles, mumps, and rubella (German measles) vaccine
PCV
Varicella (chickenpox) vaccine
12-23 months
Hep A: Hepatitis A vaccine; given as two shots at least 6 months apart
15-18 months
DTaP
4-6 years
DTaP
MMR
IPV
Varicella
11-12 years
HPV: Human Papillomavirus (HPV) vaccine, given as 3 shots over 6 months. It's recommended for both genders to prevent genital warts and certain types of cancer.
Tdap: Tetanus, Diphtheria, and Pertussis booster
MCV: Meningitis vaccine; with a booster dose (subsequent to first dose)at age 16

The second time dose is known as booster dose which increases the memory of immunological cells (Plasma cells) this helps in quicker action against the encounter with respective antigen or disease causing pathogens.

Below is the link from “American association of Pediatrics” (US Department Of Health and Human Services) which gives detail and useful diagrammatic information on vaccines and its schedules:
http://www.cdc.gov/vaccines/parents/down...0-6yrs.pdf

Vaccination is nothing but prevention of deadly diseases and is aligned with the famous thought “PREVENTION IS BETTER THAN CURE”