Georgi M. Stoimenov

Molecular Characterization of Highly Pathogenic Avian Influenza H5N1 Viruses Circulating in Bulgaria During 2024–2025: Evidence for Hidden Circulation and Zoonotic Risk Markers

Gabriela V. Goujgoulova, Georgi M. Stoimenov, Koycho Koev

The highly pathogenic avian influenza virus HPAI A(H5N1) genotype AF was detected in southern Europe during the 2021/2022 season and spread widely. It emerged in Bulgaria in 2022/2023, mainly affecting mallard ducks. The DA genotype of the virus was detected in a …

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Feline bartonellosis - a mini review

R. Pepovich, Ilia Tsachev, Magdalena Petrova Baymakova, Georgi M. Stoimenov et autres

An up-to-date literature overview of bartonellosis in cats was made. Its seroprevalence, etiological characteristics, epidemiological features and clinical manifestations are outlined. The emphasis is placed on its laboratory diagnostics, therapy and prevention in cats. Human bartonellosis with data from Bulgaria is described.

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AVIAN AVULAVIRUS 1 OUTBREAKS IN BULGARIA DURING 2016 AND 2017

Gabriela V. Goujgoulova, Georgi M. Stoimenov

Newcastle disease is one of the most important and highly contagious disease for poultry. The causative agent Avian avulavirus 1 belongs to genus Avulavirus, Family Paramyxoviridae, order Mononegavirales. There are two evolutionary related groups AAvV-1 – class I and class II. The …

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Antibiotic sensitivity of the causative microorganisms of subclinical mastitis in lactating sheep

Kalin Hristov, Aleksandar Stoimenov, Teodora P. Popova, Georgi M. Stoimenov

The aim of the presented research is to determine the antibiotic sensitivity and resistance of themicroorganisms causing subclinical mastitis in dairy sheep. To achieve this, 120 milk samples from4 farms located in 3 regions of the country were obtained and examined. The …

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DNA BARCODING AS A MOLECULAR TOOL FOR VECTORS IDENTIFICATION – REVIEW

Georgi M. Stoimenov

Vector-borne diseases pose a serious threat to public health and animal husbandry and require special attention. Knowledge of the ecology of different insect species acting as vectors of multiple infectious agents will be crucial for the development and implementation of appropriate and …

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MICROBIOLOGICAL STATUS OF THE MAMMARY GLAND IN LACTATING SHEEPS

Aleksandar Stoimenov, Teodora Petrova Popova, Georgi M. Stoimenov, Kalin Hristov

The aim of the present study was to determine the microbiological status of the mammary gland in lactating sheeps of the Lacon breed. For this purpose, milk samples from purebred animals, raisеd in sheep farm located in central region of Bulgaria, were …

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DIAGNOSTIC PROCEDURE FOR DETECTION OF HPAI H5N8-BULGARIAN EXPERIENCE DURING THE EPIZOOTIC WAVE IN 2016/2017

Gabriela V. Goujgoulova, Georgi M. Stoimenov

In the 4 months spanning the 2016/2017 winter (October – January), HPAI H5N8 was the predominant serotype throughout European countries. Bulgaria, an important geographical location for migratory birds crossing Europe through the two major migratory flyways for Africa, was heavily affected with …

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Highly pathogenic avian influenza in Bulgaria - a review

Georgi M. Stoimenov

The aim of this review was to summarise the information about the cases of highly pathogenic avian influenza in Bulgaria during the last two decades. According to the EMPRES-I FAO data, from January 2006 to the end of 2019, 141 HPAI outbreaks …

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ANALYSIS OF BLOOD BIOCHEMICAL PROFILES OF DAIRY COWS AND THEIR CALVES FROM BULGARIAN BROWN CATTLE BREED

Atanaska Teneva, Georgi M. Stoimenov, Kalin Hristov, Tsvetoslav Koynarski et autres

Present study was conducted to analyze the blood biochemical parameters of a total 271 Bulgarian Brown Cattle Breed and their calves. We evaluated the activities of aspartate aminotransferase (ASAT), alanine ami-notrans-ferase (ALAT), alkaline phosphatase (ALP), acid phosphatase (ACP), albumin (Alb), total protein …

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Analysis of a highly pathogenic avian influenza (H5N1) virus causing the first outbreak in domestic poultry in Bulgaria in January 2015

Georgi M. Stoimenov, Gabriela V. Goujgoulova, Kalin Hristov

This study documents the clinical signs, necropsy findings and viral antigen distribution of the highly pathogenic avian influenza (HPAI) H5N1 virus infection in domestic poultry (a backyard farm) and the phylogenetic analysis of the virus.On January 29, 2015, an outbreak of HPAI …

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Pathologic Evaluation of Influenza A H5N8 Infection Outbreaks in Mule Ducks in Bulgaria

Ivan Dinev, I. Zarkov, Gabriela V. Goujgoulova, Georgi M. Stoimenov et autres

This article outlines pathomorphologic findings of a study involving commercial mule ducks with confirmed influenza A H5N8 infections after a series of outbreaks in Bulgaria. Examinations were carried out after performing necropsy on dead birds from three different age groups (up to …

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Blood biochemical profiles of dairy cows and their calves from Bulgarian Black and White Cattle Breed.

Atanaska Teneva, Kalin Hristov, Georgi M. Stoimenov

This study examined the activities of aspartate aminotransferase (ASAT), alanine aminotrans-ferase (ALAT), alkaline phosphatase (ALP), acid phosphatase (ACP), albumin (Alb), total protein (TP), creatin-phosphokinase (CPK), total lipid (TL), calcium (Ca) in the plasma of 304 dairy Holstein breed cows and their calves. …