Wild measles virus strain: isolation and identification.

Four isolates of measles virus (Gag, Il, Buk and Shed) were obtained from suspensions of mononuclear cells from patients at the active stage of the disease. Vero cells were used for the virus isolation. All the isolates caused in the infected cell culture the appearance of symplasts of differently sized, star- or spindle-shaped multinuclear cells. The specificity of cytopathic effect was proved by the adsorption of monkey erythrocytes on the surface of cells infected by virus. The isolates were identified in virus neutralization (VN) and haemagglutination inhibition (HI) tests with different immune preparations: measles-globulin (standard), hyperimmune sera to rubella and mumps viruses, Sch. Zonne and Sch. Flexneria, as well as with conjugates of sera from measles patients and those vaccinated with live measles vaccine (LMV) L-16.