I. Ivanov

Prevalence of HBV and HCV among outpatients in the plovdiv region of Bulgaria, 2010–2011

P. van Damme, M. Kojouharova, T. Lernout, 2015, Journal of medical virology.

SARS-COV-2 Infection in Children and Young People in Bulgaria – A Prospective, Single-Center, Cohort Study

I. Trifonova, V. Velev, G. Dimitrov, 2023, Acta Medica Bulgarica.

Detailed Molecular Epidemiologic Characterization of HIV-1 Infection in Bulgaria Reveals Broad Diversity and Evolving Phylodynamics

W. Switzer, D. Paraskevis, A. Shankar, 2013, PloS one.