Hanna Czajka is currently working as an Associate Professor at the College of Medical Sciences, University of Rzeszow, Rzeszów, Poland. Her research interests include Vaccinology, Immunization, Vaccine Development, Immunology of Infectious Diseases, Vaccination, Combined Vaccines, Conjugate Vaccines, and Infectious Diseases. Her scientific output includes 53 publications, corresponding to 678 citations (h-index 12) (Scopus, 9 November 2023).