SURVEILLANCE OF PARASITIC DISEASES IN BULGARIA
ANNUAL EPIDEMIOLOGICAL ANALYSIS FOR 2023
DOI:
https://doi.org/10.58395/srqw8992Keywords:
parasitic infections, surveillance, control , zoonosesAbstract
The incidence and number of cases of several parasitic diseases subject to mandatory reporting and registration under the Ministry of Health (MoH) 2005 Regulation 21 increased after the end of the global pandemic of COVID-19 in 2023. In addition, parasitic infections imported from endemic tropical regions are recorded annually in the country. A significant number of people are screened for parasitic diseases each year. The primary indication for screening is prophylactic, followed by epidemiological and clinical indications. This report aims to analyse the dynamics of parasitic diseases in 2023. Data from the periodic and annual reports of the RHI, medical institutions and NCIPD were used as inputs. In 2023, 647 781 people were tested for parasites, of whom 2.0% were diagnosed with various parasitic infections. Cystic echinococcosis increased from 89 cases in 2022 to 117 cases in 2023. The annual incidence of the disease increased from 1.3% in 2022 to 1.81% in 2023.
Regarding soil-transmitted parasitic diseases, 447 people were diagnosed with ascariasis and 50 with trichuriasis. Among the 458 764 people tested, the prevalence of enterobiasis was 1.74%. Out of 1 305 suspected cases, 10 individuals were diagnosed with imported malaria. Unfortunately, the disease was fatal for one patient of Bulgarian nationality.
Analysis of the data showed no discernible trend in the incidence of parasitic diseases in 2023. However, cases of cystic echinococcosis show an upward trend. For the first time, no epidemic outbreaks of trichinellosis were recorded in 2023.
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References
1. Paniker CKJ. Paniker’s Textbook of Medical Parasitology, 7th edition, Ghosh S., Editor. 2013, New Delhi, India: Jaypee Brothers Medical Publishers (P) Ltd., 266 pp.
2. Anisuzzaman, Md Shahadat H, Takeshi H, Sharmin SL, Kofi DK, Hayato K, Naotoshi T, Abdul Alim Md. Chapter Two - Food- and vector-borne parasitic zoonoses: Global burden and impacts, Editor(s): David Rollinson, Russell Stothard, Advances in Parasitology, 2023; 120: 87-136. https://doi.org/10.1016/bs.apar.2023.02.001
3. WHO. Tripartite and UNEP support OHHLEP's definition of "One Health". 2022 https://www.who.int/news/item/01-12-2021-tripartite-and-unep-support-ohhlep-s-definition-of-one-health
4. Hotez PJ, Lo NC. 27 - Neglected Tropical Diseases: Public Health Control Programs and Mass Drug Administration, Editor(s): Edward T. Ryan, David R. Hill, Tom Solomon, Naomi E. Aronson, Timothy P. Endy, Hunter's Tropical Medicine and Emerging Infectious Diseases (Tenth Edition), Elsevier, 2020, Pages 209-213. https://doi.org/10.1016/B978-0-323-55512-8.00027-2
5. Anisuzzaman and Tsuji N (2020) Schistosomiasis and hookworm infection in humans: Disease burden, pathobiology and anthelmintic vaccines. Parasitology International. 75:102051. https://doi.org/10.1016/j.parint.2020.102051
6. European Centre for Disease Prevention and Control. Echinococcosis. In: ECDC. Annual Epidemiological Report for 2022. Stockholm: ECDC; 2024. https://www.ecdc.europa.eu/sites/default/files/documents/ECHI_AER_2022_Report.pdf
7. Harizanov R, Rainova I, Tsvetkova N, Kaftandjiev I, Borisova R, Videnova M, Kaneva E, Mikov O, Ivanova A, Yakimova V. Prevalence of parasitic pathology among humans in Bulgaria: A retrospective cohort study over a two-year period (2020 – 2021). Probl. Inf. Parasit. Dis. 2022; 50(2): 26-34. https://doi.org/10.58395/pipd.v50i2.93
8. European Centre for Disease Prevention and Control. Trichinellosis. In: ECDC. Annual epidemiological report for 2022. Stockholm: ECDC; 2024. https://www.ecdc.europa.eu/sites/default/files/documents/trichinellosis-annual-epidemiological-report-2022.pdf
9. Harizanov R, Rainova I, Tsvetkova N, Borisova R, Kaneva E, Ivanova A, Kaftandjiev I, Mikov O, Videnova M, Yakimova V. Annual analysis of parasitic infections in Bulgaria in 2022. Probl. Inf. Parasit. Dis. 2023; 51(2): 28-32. https://doi.org/10.58395/5hpwmk26
10. WHO Soil-transmitted helminthiases. In: Global Health Observatory data. https://www.who.int/data/gho/data/themes/topics/soil-transmitted-helminthiases
11. Kurscheid, J.M. (2021). Soil-transmitted Helminthiasis in Europe and Central Asia: An Update on the Epidemiology and Control Efforts. In: Steinmann, P., Utzinger, J. (eds) Neglected Tropical Diseases - Europe and Central Asia. Neglected Tropical Diseases. Springer, Cham. https://doi.org/10.1007/978-3-030-84224-6_2
12. Lashaki E, Mizani A, Hosseini S, Habibi B, Taherkhani K, Javadi a, Taremiha A, Dogangeh S. (2023): Global prevalence of enterobiasis in young children over the past 20 years: a systematic review and meta-analysis. Osong Public Health Res Perspect, 14(6):441-450. https://doi.org/10.24171/j.phrp.2023.0204
13. Harizanov, R.; Tsvetkova, N.; Ivanova, A.; Enikova, R.; Videnova, M.; Rainova, I.; Kaneva, E.; Kaftandjiev, I.; Strashimirov, D.; Yancheva-Petrova, N.; et al. Study on the Prevalence of Pneumocystis jirovecii as a Causative Agentof Lung Pathology in People with Different Immune Status. Biomedicines 2023; 11: 1851. https://doi.org/10.3390/biomedicines11071851
14. R. Harizanov, Z. Traykova, I. Rainova, N. Tsvetkova, R. Borisova, M. Videnova, V. Yakimova, A. Ivanova. Epidemiological characteristics and clinical implications of imported malaria: A review of the last 10 years. Abstract Book of the XXII National Congress on clinical Microbiology and infections of the Bulgarian association of microbiologists, Sofia, 13-15.09.2024, pp. 110-111.
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Copyright (c) 2025 Rumen Harizanov, Violeta Yakimova, Mihaela Videnova, Ognyan Mikov, Aleksandra Ivanova, Eleonora Kaneva, Raina Borisova, Nina Tsvetkova, Iskra Rainova, Zornitca Traykova (Author)
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