2009
DOI: 10.1016/j.vaccine.2009.06.070
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Long lasting immunity in chickens induced by a single shot of influenza vaccine prepared from inactivated non-pathogenic H5N1 virus particles against challenge with a highly pathogenic avian influenza virus

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Cited by 21 publications
(19 citation statements)
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“…against AI, especially the protection induced by inactivated vaccine (Swayne & Kapczynski, 2008). Several studies demonstrated that inactivated vaccines can elicit strong systemic immune response preventing the mortality and the morbidity of the chickens when challenged with the H5N1 HPAIVs Terregino et al, 2007;Isoda et al, 2008;Tian et al, 2010) and that this protective immunity can remain up to 138 weeks (Sasaki et al, 2009). Indeed, a very recent study showed that bivalent vaccine containing inactivated La Sota strain of NDV and reassortant highly pathogenic AI H5N1 virus at 10 6 EID 50 and 10 7.5 EID 50 , respectively, induced high HI titres and afforded complete clinical and shedding protection after 3 weeks p.v.…”
Section: Discussionmentioning
confidence: 99%
“…against AI, especially the protection induced by inactivated vaccine (Swayne & Kapczynski, 2008). Several studies demonstrated that inactivated vaccines can elicit strong systemic immune response preventing the mortality and the morbidity of the chickens when challenged with the H5N1 HPAIVs Terregino et al, 2007;Isoda et al, 2008;Tian et al, 2010) and that this protective immunity can remain up to 138 weeks (Sasaki et al, 2009). Indeed, a very recent study showed that bivalent vaccine containing inactivated La Sota strain of NDV and reassortant highly pathogenic AI H5N1 virus at 10 6 EID 50 and 10 7.5 EID 50 , respectively, induced high HI titres and afforded complete clinical and shedding protection after 3 weeks p.v.…”
Section: Discussionmentioning
confidence: 99%
“…After this period, poultry will recover or die with a clinical mortality rate of 97.5%. We assume immunity of recovered poultry to repeat infections [47][48][49][50].…”
Section: Highly Pathogenic Avian Influenzamentioning
confidence: 99%
“…Comparative studies on the differences of antibody responses in chicken lines are of prime importance in evaluating vaccine efficacy precisely for control of highly contagious diseases such as avian influenza. Then, all our previous studies were conducted using specific pathogenfree (SPF) white leghorn chickens reared in a highly sanitary environment [4,[6][7][8]. Our concerns about whether the test results for vaccine efficacy with SPF chickens are analogous with commercial layers cannot be neglected [4,[6][7][8].…”
mentioning
confidence: 99%
“…Then, all our previous studies were conducted using specific pathogenfree (SPF) white leghorn chickens reared in a highly sanitary environment [4,[6][7][8]. Our concerns about whether the test results for vaccine efficacy with SPF chickens are analogous with commercial layers cannot be neglected [4,[6][7][8]. So, it is important to obtain comparative data for antibody responses between SPF chickens and typical commercial layers reared in common poultry farms.…”
mentioning
confidence: 99%
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