Properties of influenza viruses A/Asia/57 and A-equi/Praha/56

摘要

Studies of the biological properties of the A/Asia/57 influenza viruses and of the strain A-equi/Praha/56 have shown that these agglutinate not only chicken, guinea-pig and human erythrocytes but also erythrocytes of swine, calves and horses. The ability to agglutinate horse erythrocytes, in particular, is a characteristic of these strains and has not been observed in other influenza strains of type A, A1, B, C or Sendai or in strains of mumps or Newcastle disease viruses.