tetano
Editor, Senior Moderator
Ann Rheum Dis. 2011 Jun;70(6):1068-73.
Immunogenicity and safety of the 2009 non-adjuvanted influenza A/H1N1 vaccine in a large cohort of autoimmune rheumatic diseases.
Saad CG, Borba EF, Aikawa NE, Silva CA, Pereira RM, Calich AL, Moraes JC, Ribeiro AC, Viana VS, Pasoto SG, Carvalho JF, Fran?a IL, Guedes LK, Shinjo SK, Sampaio-Barros PD, Caleiro MT, Goncalves CR, Fuller R, Levy-Neto M, Timenetsky Mdo C, Precioso AR, Bonfa E.
Source
Correspondence to Eloisa Bonfa, Faculdade de Medicina da Universidade de S?o Paulo-Disciplina de Reumatologia, Av Dr Arnaldo, 455, 3? andar, sala 3190, Cerqueira C?sar, Sao Paulo SP 05403-010, Brazil; ebonfa@lim17.fm.usp.br.
Abstract
BACKGROUND:
/st> Despite the WHO recommendation that the 2010-2011 trivalent seasonal flu vaccine must contain A/California/7/2009/H1N1-like virus there is no consistent data regarding its immunogenicity and safety in a large autoimmune rheumatic disease (ARD) population.
METHODS:
/st> 1668 ARD patients (systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), ankylosing spondylitis (AS), systemic sclerosis, psoriatic arthritis (PsA), Beh?et's disease (BD), mixed connective tissue disease, primary antiphospholipid syndrome (PAPS), dermatomyositis (DM), primary Sj?gren's syndrome, Takayasu's arteritis, polymyositis and Granulomatosis with polyangiitis (Wegener's) (GPA)) and 234 healthy controls were vaccinated with a non-adjuvanted influenza A/California/7/2009(H1N1) virus-like strain flu.
SUBJECTS:
were evaluated before vaccination and 21 days post-vaccination. The percentage of seroprotection, seroconversion and the factor increase in geometric mean titre (GMT) were calculated.
RESULTS:
/st> After immunisation, seroprotection rates (68.5% vs 82.9% p<0.0001), seroconversion rates (63.4% vs 76.9%, p<0.001) and the factor increase in GMT (8.9 vs 13.2 p<0.0001) were significantly lower in ARD than controls. Analysis of specific diseases revealed that seroprotection significantly reduced in SLE (p<0.0001), RA (p<0.0001), PsA (p=0.0006), AS (p=0.04), BD (p=0.04) and DM (p=0.04) patients than controls. The seroconversion rates in SLE (p<0.0001), RA (p<0.0001) and PsA (p=0.0006) patients and the increase in GMTs in SLE (p<0.0001), RA (p<0.0001) and PsA (p<0.0001) patients were also reduced compared with controls. Moderate and severe side effects were not reported.
CONCLUSIONS:
/st> The novel recognition of a diverse vaccine immunogenicity profile in distinct ARDs supports the notion that a booster dose may be recommended for diseases with suboptimal immune responses. This large study also settles the issue of vaccine safety. (ClinicalTrials.gov #NCT01151644).
PMID:
21540203
[PubMed - in process]
http://www.ncbi.nlm.nih.gov/pubmed/21540203
Immunogenicity and safety of the 2009 non-adjuvanted influenza A/H1N1 vaccine in a large cohort of autoimmune rheumatic diseases.
Saad CG, Borba EF, Aikawa NE, Silva CA, Pereira RM, Calich AL, Moraes JC, Ribeiro AC, Viana VS, Pasoto SG, Carvalho JF, Fran?a IL, Guedes LK, Shinjo SK, Sampaio-Barros PD, Caleiro MT, Goncalves CR, Fuller R, Levy-Neto M, Timenetsky Mdo C, Precioso AR, Bonfa E.
Source
Correspondence to Eloisa Bonfa, Faculdade de Medicina da Universidade de S?o Paulo-Disciplina de Reumatologia, Av Dr Arnaldo, 455, 3? andar, sala 3190, Cerqueira C?sar, Sao Paulo SP 05403-010, Brazil; ebonfa@lim17.fm.usp.br.
Abstract
BACKGROUND:
/st> Despite the WHO recommendation that the 2010-2011 trivalent seasonal flu vaccine must contain A/California/7/2009/H1N1-like virus there is no consistent data regarding its immunogenicity and safety in a large autoimmune rheumatic disease (ARD) population.
METHODS:
/st> 1668 ARD patients (systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), ankylosing spondylitis (AS), systemic sclerosis, psoriatic arthritis (PsA), Beh?et's disease (BD), mixed connective tissue disease, primary antiphospholipid syndrome (PAPS), dermatomyositis (DM), primary Sj?gren's syndrome, Takayasu's arteritis, polymyositis and Granulomatosis with polyangiitis (Wegener's) (GPA)) and 234 healthy controls were vaccinated with a non-adjuvanted influenza A/California/7/2009(H1N1) virus-like strain flu.
SUBJECTS:
were evaluated before vaccination and 21 days post-vaccination. The percentage of seroprotection, seroconversion and the factor increase in geometric mean titre (GMT) were calculated.
RESULTS:
/st> After immunisation, seroprotection rates (68.5% vs 82.9% p<0.0001), seroconversion rates (63.4% vs 76.9%, p<0.001) and the factor increase in GMT (8.9 vs 13.2 p<0.0001) were significantly lower in ARD than controls. Analysis of specific diseases revealed that seroprotection significantly reduced in SLE (p<0.0001), RA (p<0.0001), PsA (p=0.0006), AS (p=0.04), BD (p=0.04) and DM (p=0.04) patients than controls. The seroconversion rates in SLE (p<0.0001), RA (p<0.0001) and PsA (p=0.0006) patients and the increase in GMTs in SLE (p<0.0001), RA (p<0.0001) and PsA (p<0.0001) patients were also reduced compared with controls. Moderate and severe side effects were not reported.
CONCLUSIONS:
/st> The novel recognition of a diverse vaccine immunogenicity profile in distinct ARDs supports the notion that a booster dose may be recommended for diseases with suboptimal immune responses. This large study also settles the issue of vaccine safety. (ClinicalTrials.gov #NCT01151644).
PMID:
21540203
[PubMed - in process]
http://www.ncbi.nlm.nih.gov/pubmed/21540203