Recommended vaccination schedule
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Overview of Recommended Vaccination Schedules
Vaccination schedules are carefully designed to protect individuals at different ages and risk levels from vaccine-preventable diseases. These schedules are regularly updated based on new evidence, disease trends, and vaccine availability to ensure optimal protection for the population Kim2019Temte2013Kim2018+4 MORE.
Childhood Vaccination Schedule: Key Recommendations
Childhood immunization schedules typically start at birth and continue through adolescence. Key points include:
- Birth Doses: The first dose of hepatitis B vaccine is recommended within 24 hours of birth. Bacille Calmette-Guérin (BCG) is also given early in life in some countries Weekly2021Ahmed2021.
- Infancy and Early Childhood: Multiple doses of vaccines such as hepatitis B, poliovirus, diphtheria-tetanus-pertussis (DTaP), measles-mumps-rubella (MMR), and others are administered before the first and second birthdays Weekly2021Ahmed2021.
- Booster Doses: Additional doses, such as the fourth dose of DTaP and second dose of MMR, are given in the second year of life or before school entry to ensure long-term protection Weekly2021Ahmed2021.
- Catch-Up Vaccination: Children who miss scheduled doses should receive catch-up vaccinations as soon as possible .
Adult Immunization Schedule: United States
The Advisory Committee on Immunization Practices (ACIP) provides annual updates for adult vaccination in the U.S. The schedule is tailored by age, health status, occupation, lifestyle, and travel 1Kim2019Temte2013+4 MORE.
Routine Vaccines for Adults
- Influenza: Annual vaccination is recommended for all adults 1Kim2019Temte2013+4 MORE.
- Tetanus, Diphtheria, Pertussis (Tdap/Td): One dose of Tdap is recommended for adults who have not previously received it, followed by a Td booster every 10 years. Pregnant women should receive Tdap during each pregnancy 1Kim2019Temte2013+2 MORE.
- Measles, Mumps, Rubella (MMR): Adults born in 1957 or later without evidence of immunity should receive 1 or 2 doses depending on risk factors 1Kim2019Temte2013+2 MORE.
- Varicella (Chickenpox): Adults without evidence of immunity should receive 2 doses 1Kim2019Temte2013+2 MORE.
- Human Papillomavirus (HPV): Recommended for adults up to age 26, and up to age 45 based on shared clinical decision-making Kim2019Kim2018Kim2017+1 MORE.
- Zoster (Shingles): Recombinant zoster vaccine (RZV) is recommended for adults aged 50 years or older Kim2018Kim2017.
- Pneumococcal Vaccines: Adults 65 years and older, and younger adults with certain health conditions, should receive pneumococcal vaccines (PCV13 and/or PPSV23) Kim2019Temte2013Kim2018+1 MORE.
- Hepatitis A and B: Recommended for adults at risk or who want protection Kim2019Temte2013Kim2018+1 MORE.
- Meningococcal Vaccines: Indicated for adults with certain medical conditions, travelers, and during outbreaks 1Kim2019Temte2013+3 MORE.
Special Considerations
- Pregnant Women: Tdap is recommended during each pregnancy. Some vaccines, such as live vaccines (MMR, varicella, zoster), are contraindicated during pregnancy Kim2019Temte2013Kim2018+1 MORE.
- Immunocompromised Individuals: Certain vaccines may be contraindicated or require special timing and dosing Kim2019Temte2013Kim2018+2 MORE.
- Older Adults: Additional vaccines, such as zoster and pneumococcal, are emphasized for those aged 50 or 65 and older Kim2019Kim2018Kim2017.
Lifetime Immunization Schedules: International Perspectives
Countries like Italy have developed "lifetime immunization schedules" that guide vaccination from infancy through old age. These schedules emphasize:
- Uniform high coverage for MMRV (measles, mumps, rubella, varicella)
- Extension of meningococcal and HPV vaccination to older age groups
- Sequential pneumococcal vaccination for seniors
- Increased focus on vaccination for pregnant women and risk groups
- Progressive lowering of the age for free influenza vaccination .
Principles Behind Vaccination Schedules
Vaccination schedules are based on disease epidemiology, vaccine effectiveness, safety, and local needs. They are designed to maximize protection, adapt to new vaccines, and address special populations such as pregnant women, travelers, and immunocompromised individuals .
Conclusion
Recommended vaccination schedules are dynamic and evidence-based, aiming to protect individuals across the lifespan. They are updated regularly to reflect new scientific findings, changes in disease patterns, and the introduction of new vaccines. Following these schedules is essential for individual and public health 1Kim2019Bonanni2021+7 MORE.
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