Abstract:
:Foot-and-mouth-disease (FMD) remains the most infectious livestock disease worldwide. Although commercially available inactivated or adenovirus-vectored-vaccines (Ad5-FMD) are effective, they require 5-7 days to induce protection. Therefore, new control strategies that stimulate rapid immune responses are needed. Expression of bovine interferon λ3 using the Ad5-vector platform (Ad5-boIFNλ3) is able to delay disease in cattle, but clinical signs appear at 9 days after challenge. We hypothesized that combination of Ad5-boIFNλ3 and Ad5-FMD could induce immediate and lasting protection against FMD. Cattle were vaccinated with an Ad5-FMD, Ad5-boIFNλ3, or the combination of both, followed by challenge at three days post-immunization. All animals treated with Ad5-FMD combined with Ad5-boIFNλ3 were fully protected against FMD, despite the absence of systemic neutralizing antibodies or antiviral activity at the time of challenge. Induction of a strong cell-mediated immune response suggested that Ad5-boIFNλ3 is able to act as an adjuvant of Ad5-FMD vaccine in cattle.
journal_name
Virologyjournal_title
Virologyauthors
Diaz-San Segundo F,Montiel NA,Sturza DF,Perez-Martin E,Hickman D,Ramirez-Medina E,Grubman MJ,de Los Santos Tdoi
10.1016/j.virol.2016.09.027subject
Has Abstractpub_date
2016-12-01 00:00:00pages
340-349eissn
0042-6822issn
1096-0341pii
S0042-6822(16)30290-2journal_volume
499pub_type
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