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Trifonova I, Levterova V, Simeonovski I, Ivanova M, Brankova N, Kantardzhiev T. Impact of the National Vaccination Strategy on the Prevalence of Streptococcus pneumoniae and Its Serotypes Among Clinically Healthy Children Under Six Years of Age During and After the COVID-19 Pandemic. Vaccines. 2025; 13(6):634. https://doi.org/10.3390/vaccines13060634

Trifonova, Ivelina, Victoria Levterova, Ivan Simeonovski, Magi Ivanova, Nadia Brankova, and Todor Kantardzhiev. 2025. "Impact of the National Vaccination Strategy on the Prevalence of Streptococcus pneumoniae and Its Serotypes Among Clinically Healthy Children Under Six Years of Age During and After the COVID-19 Pandemic" Vaccines 13, no. 6: 634. https://doi.org/10.3390/vaccines13060634

Trifonova, I., Levterova, V., Simeonovski, I., Ivanova, M., Brankova, N., & Kantardzhiev, T. (2025). Impact of the National Vaccination Strategy on the Prevalence of Streptococcus pneumoniae and Its Serotypes Among Clinically Healthy Children Under Six Years of Age During and After the COVID-19 Pandemic. Vaccines, 13(6), 634. https://doi.org/10.3390/vaccines13060634