| occurrence of influenza b/hong kong-like strains in brazil, during 2002. | through the influenza virus surveillance from january to october 2002, influenza b/hong kong-like strains circulating in the southeast and centre east regions of brazil have been demonstrated. this strain is a variant from b/victoria/02/88 whose since 1991 and until recently have been isolated relatively infrequently and have been limited to south-eastern asia. a total of 510 respiratory secretions were collected from patients 0 to 60 years of age, with acute respiratory illness, living in the s ... | 2003 | 12751324 |
| the reappearance of victoria lineage influenza b virus in brazil, antigenic and molecular analysis. | in contrast to influenza a, minor influenza b viruses can co-circulate with the dominant strain during an epidemic allowing the re-emergence of old strains and reassortment between those different strains. the 2001-2002 influenza season in the northern hemisphere was distinguished by the re-emergence of the victoria-lineage viruses, which replaced the yamagata-lineage, after being restricted to east asia throughout the 1990s. | 2006 | 16713335 |