The need for prudent use of antibiotics and routine use of vaccines

Area of Science:

• Pediatrics
• Infectious Diseases
• Vaccinology

Background:

• Streptococcus pneumoniae causes respiratory and invasive infections, with antibiotic resistance a growing concern.
• Extensive antibiotic use has driven the emergence of non-susceptible pneumococcal serotypes.
• Pneumococcal conjugate vaccines (PCV) are crucial for reducing morbidity and mortality.

Purpose of the Study:

• To evaluate the impact of pneumococcal conjugate vaccine (PCV) programs on antibiotic usage and resistance patterns.
• To analyze changes in pneumococcal serotype distribution following PCV implementation.
• To assess the effectiveness of PCV in reducing otitis media (OM) and acute otitis media (AOM) related healthcare visits and antibiotic prescriptions.

Main Methods:

• Review of observational studies and surveillance data from various countries (USA, Israel, France) before and after PCV introduction.
• Analysis of antibiotic prescription data for OM and AOM.
• Monitoring of nasopharyngeal carriage of Streptococcus pneumoniae serotypes, including vaccine-type and non-vaccine type strains.

Main Results:

• PCV programs demonstrated significant reductions in antibiotic prescriptions for OM and AOM, ranging from 5.4% to 41.9% in different studies.
• Implementation of PCV led to a decrease in the carriage of penicillin-resistant and penicillin-non-susceptible pneumococci.
• A notable shift in serotype distribution was observed, with a decline in vaccine-serotype carriage and an increase in non-vaccine serotypes, including serotype 19A.

Conclusions:

• Pneumococcal conjugate vaccines are effective in reducing antibiotic consumption and combating antibiotic resistance.
• PCV programs contribute to a decrease in otitis media incidence and associated antibiotic prescriptions.
• Surveillance is essential to monitor serotype replacement and guide public health strategies for pneumococcal disease prevention.