[Current events in vaccination]

Area of Science:

• Infectious Diseases
• Vaccinology
• Public Health

Context:

• The Infectious Disease Society of America (IDSA) annual meeting in 2010 reviewed the 2009 H1N1 influenza pandemic and discussed various vaccination programs.
• The H1N1 pandemic, while less deadly overall than seasonal flu, disproportionately affected younger populations, leading to a high number of years of life lost.
• Discussions included the evaluation of existing vaccines and the presentation of novel vaccines under development.

Purpose:

• To review the impact and response to the 2009 H1N1 influenza pandemic.
• To evaluate the efficacy and safety of current vaccination programs for various infectious diseases.
• To present new vaccine technologies and strategies for improving vaccine coverage across all age groups.

Summary:

• Monovalent vaccines for H1N1 demonstrated good tolerability in diverse populations, including infants, children, adults, and pregnant women.
• The 13-valent pneumococcal conjugate vaccine was introduced to address serotype replacement issues, while rotavirus vaccine efficacy was confirmed by reduced hospitalizations and deaths.
• Vaccination against human papillomavirus (HPV) in pre-adolescents showed no adverse effects. Routine chickenpox vaccination did not impact shingles incidence, but shingles vaccination in older adults proved 55% effective.

Impact:

• The findings underscore the importance of lifelong vaccination schedules, extending beyond infancy to include adults and the elderly, for sustained public health.
• Increased vaccine coverage is a priority, with a call for promoting comprehensive vaccine calendars to ensure good health across all life stages.
• The review highlights the ongoing need for vaccine development and strategic implementation to combat infectious diseases effectively.