[What uses for the acellular pertussis vaccine?]

Area of Science:

• Immunology
• Vaccinology
• Public Health

Background:

• The acellular pertussis vaccine (aP) provides better tolerance than the whole cell pertussis vaccine (wP) and is effective against whooping cough.
• Combined pentavalent vaccines containing aP for infant primary immunization may cause immune interference, diminishing responses to Haemophilus type b or poliovirus valences.

Purpose of the Study:

• To evaluate the impact of acellular pertussis vaccine in combined infant immunization schedules.
• To determine the optimal pertussis vaccine strategy for infant immunization in France.

Main Methods:

• Comparative analysis of vaccine tolerance and efficacy.
• Assessment of immune responses to combined pentavalent vaccines containing either aP or wP.
• Review of national immunization policies and recommendations.

Main Results:

• Acellular pertussis vaccines demonstrate superior tolerance compared to whole cell pertussis vaccines.
• Immune interference observed with aP-containing pentavalent vaccines, potentially affecting responses to other antigens.
• Whole cell pertussis vaccines in combination appear to maintain robust immune responses for primary infant immunization.

Conclusions:

• The study recommends using whole cell pertussis combined vaccines for primary infant immunization (2, 3, and 4 months) in France.
• Acellular pertussis vaccines are advised for booster injections at 18 months and 10-11 years.
• This strategy aims to balance vaccine tolerance with optimal immune protection against pertussis and other vaccine-preventable diseases.