[The isolation of measles virus strains and the study of their hemagglutinating activity]

Area of Science:

• Virology
• Immunology
• Cell Biology

Background:

• Measles virus (MeV) is a significant public health concern, necessitating continuous surveillance and characterization of circulating strains.
• Understanding the diversity and properties of MeV isolates is crucial for vaccine development and epidemiological studies.

Purpose of the Study:

• To isolate and characterize measles virus strains from patients in the active stage of the disease.
• To identify the specific properties, including cytopathic effects and hemagglutinating activity, of the isolated measles strains.

Main Methods:

• Isolation of measles virus strains from mononuclear cells of measles patients using continuous Vero cell cultures.
• Observation of cytopathic effects, including syncytia formation and multinucleated giant cells.
• Confirmation of viral specificity through red blood cell adsorption.
• Identification and characterization using neutralization tests and hemagglutination inhibition (HI) tests with various immune sera and gamma-globulin.

Main Results:

• Three distinct measles virus strains (Gag, Il, and Buk) were successfully isolated.
• All isolates induced characteristic cytopathic effects in Vero cells, including the formation of syncytia and multinucleated cells.
• The Buk strain exhibited particularly high hemagglutinating activity compared to the other isolates.

Conclusions:

• The study successfully isolated and identified three measles virus strains from clinical samples.
• The findings highlight the variability among measles virus strains, with the Buk strain showing notable hemagglutinating properties.
• These characterized strains can serve as valuable resources for further research into measles pathogenesis and vaccine efficacy.