Abstract：
:To elucidate epidemiological interference between respiratory syncytial (RSV) and influenza viruses, the influence of influenza A (HlN1) virus on the growth of RSV was examined. Although RSV grew in MDCK cells, coinfection with influenza A virus led to a reduction of progeny RSV. The degree of growth interference depended on the time of infection with influenza A virus post infection (p.i.) with RSV. In fact, infection with influenza A virus 12 hrs p.i. with RSV did not influence growth of the latter virus. On the contrary, growth suppression of influenza A virus by RSV was observed when the coinfection began at the later stages of RSV infection. Suppression of the growth of RSV by influenza A infection was further demonstrated at the level of viral protein synthesis. An indirect immunofluorescence (IF) test revealed that a large proportion of infected cells synthesized both RSV and influenza A virus antigens. Scanning electron microscopic (SEM) examination demonstrated that influenza A and RSV virions possessing surface antigens specific for each virus were selectively released from dually infected cells. In the present study, we proved for the first time that the growth of RSV is blocked by competitive infection with influenza A virus in a susceptible cell population, competitive protein synthesis and selective budding of RSV and influenza viruses from the same infected cells.
journal_name
Acta Viroljournal_title
Acta virologicaauthors
Shinjoh M,Omoe K,Saito N,Matsuo N,Nerome Ksubject
Has Abstractpub_date
2000-04-01 00:00:00pages
91-7issue
2eissn
0001-723Xissn
1336-2305journal_volume
44pub_type
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