BIOLOGIC AND ANTIGENIC CHARACTERISTICS OF INFLUENZA VIRUSES TYPE A ISOLATED IN THE TOWN OF VARNA DURING 1996-1998

The haemadsorption, haemagglutination, and inhibitor-susceptibility as well as the eluent, pathogenic, toxic, and immunogenic activity of 10 isolated influenza type A strains were examined using modern methods for studying their antigenic structure and some biological properties. The investigations showed a continuous active circulation of influenza virus type A with antigenic formula H3N2 similar to that of standard strains AJ Beijing/32/92, Johanesburg/33/95, and A/Uhan/359/95 with the corresponding biological properties

ATTEMPTS FOR CULTIVATION OF SOME DNA- AND RNA-VIRUSES ON CELL CULTURE FROM HUMAN THYROID GLAND

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SOME PHYSICO-CHEMICAL CHARACTERISTICS OF NEURAMINIDASE AS A COMPONENT OF THE INFLUENZA VIRUS TYPE A. STUDY OF THE INFLUENCE OF Ca2+ UPON NEURAMINIDASE ACTIVITY (N2) OF STANDARD STRAINS INFLUENZA VIRUSES: A/VICTORIA/35/72 (H3N2) AND A/TEXAS/1/77 (H3N2)

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COMPLEX ANALYSIS OF BIOLOGIC PROPERTIES OF INFLUENZA VIRUSES ISOLATED IN VARNA DISTRICT

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FREQUENCY OF ISOLATION AND TYPE CHARACTERISTICS OF HERPES SIMPLEX VIRUS IN VARIOUS CLINICAL FORMS OF HERPES

The isolation rate of herpes simplex virus (HSV) was investigated in relation to the stage of herpetic disease in 186 patients from the Varna region. It was proved that HSV was isolated most success filly during the first 1-2 days after the appearance of herpetic vesicles. Isolation of HSV in the later stages of the illness was rather difficult. An analysis of the correlation between the type of the isolated HSV and the location of the disease was performed, too. It was established that HSV-1 was isolated from all patients with labial and facial herpes, HSV-2 was isolated from patients with genital and gluteal herpes while both types were isolated from cases with herpes of the extremities. The earlier established correlation between the HSV type and location of the herpetic disease remains unchanged in Bulgaria in contrast to many European countries and USA

DETERMINATION OF THE ANTIGENIC PROFILE OF THE NEURAMINIDASE COMPONENT OF SOME STANDARD AND LOCAL INFLUENZA VIRUS TYPE A STRAINS ACCORDING TO RIHA

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SORPTION PROPERTIES OF NATURAL MINERAL SORBENTS TOWARDS SOME VIRUSES

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STUDY OF INHIBITORY EFFECT OF GLUTATHIONЕ-REDUCED, L-CYSTEINE AND ZINC IONS ON NEURAMINIDASE N2 ACTIVITY IN INFLUENZA VIRUS TYPE A

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EXPERIMENTS TO DETERMINE NEURAMINIDASE N2 THERMOSENSIBILITY OF SOME STANDARD AND LOCAL INFLUENZA VIRUS TYPE A STRAINS

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