The impact of vaccination on rhinosinusitis and otitis media

Area of Science:

• Pediatric infectious diseases
• Vaccinology
• Microbiology

Background:

• Acute otitis media (AOM) and acute bacterial rhinosinusitis (ABRS) are common childhood infections.
• The bacteriology and epidemiology of these infections have been influenced by routine childhood vaccinations.

Purpose of the Study:

• To analyze the impact of routine childhood vaccinations on the frequency and causative agents of AOM and ABRS.
• To understand the evolving role of specific bacteria, including Streptococcus pneumoniae and Staphylococcus aureus, in these infections post-vaccination.

Main Methods:

• Review of epidemiological data and microbiological studies on AOM and ABRS.
• Analysis of the effects of Haemophilus influenzae type b (Hib) and conjugated pneumococcal vaccines.
• Examination of trends in antibiotic resistance and the emergence of non-vaccine serotypes.

Main Results:

• Influenza vaccination shows a moderate reduction in AOM.
• Conjugated pneumococcal vaccines drastically reduced invasive pneumococcal disease and moderately decreased AOM and ABRS.
• Vaccine serotypes of Streptococcus pneumoniae are largely eliminated, with emergence of other serotypes.
• Antibiotic resistance in pneumococcal disease has decreased.
• A decline in S. pneumoniae prevalence may correlate with increased Staphylococcus aureus incidence in AOM/ABRS.

Conclusions:

• Childhood vaccinations have altered the landscape of AOM and ABRS pathogens.
• While effective against targeted bacteria, vaccines have led to shifts in microbial ecology, necessitating ongoing surveillance.
• The rise of Staphylococcus aureus in some cases highlights the complex interplay of bacterial interference and vaccination programs.