THE ROLE OF VACCINATION IN THE PREVENTION OF SEASONAL AIRBORNE INFECTIONS: EPIDEMIOLOGICAL EFFECTIVENESS AND PUBLIC HEALTH IMPACT

Abstract

Background: Seasonal airborne infections, particularly Influenza, Measles, and Pneumococcal pneumonia, impose a heavy burden on the healthcare system in the Andijan region during the autumn-winter period. While non-specific preventive measures (masks, hygiene) are useful, specific immunoprophylaxis (vaccination) remains the gold standard for disease control. This study aims to evaluate the epidemiological effectiveness of vaccination programs against seasonal respiratory pathogens and analyze the clinical course of "breakthrough" infections in vaccinated individuals. Methods: A retrospective epidemiological analysis was conducted using data from the Andijan Regional Center for Sanitary and Epidemiological Welfare (2021–2024). The study compared incidence rates, hospitalization frequency, and complication rates between vaccinated and unvaccinated cohorts for Influenza (seasonal vaccine) and Measles (MMR vaccine). A survey on vaccine acceptance was also administered to 500 parents. Results: The incidence of laboratory-confirmed Influenza was 4.5 times lower in the vaccinated group compared to the unvaccinated population (p<0.001). Among vaccinated individuals who contracted the disease, the duration of illness was significantly shorter (3.2 days vs 7.5 days), and zero cases of severe pneumonia were recorded. However, vaccine hesitancy remains a challenge, with only 45% of the high-risk population receiving the seasonal flu shot. Conclusion: Vaccination is the single most effective tool for reducing the morbidity and mortality associated with seasonal airborne infections. Increasing vaccination coverage is critical for establishing herd immunity and preventing large-scale outbreaks.