| Autor: |
Sansyzbay AR; Research Institute for Biological Safety Problems, Gvardeiskiy, Kazakhstan., Erofeeva MK, Khairullin BM, Sandybayev NT, Kydyrbayev ZK, Mamadaliyev SM, Kassenov MM, Sergeeva MV, Romanova JR, Krivitskaya VZ, Kiselev OI, Stukova MA |
| Jazyk: |
angličtina |
| Zdroj: |
Clinical and vaccine immunology : CVI [Clin Vaccine Immunol] 2013 Aug; Vol. 20 (8), pp. 1314-9. Date of Electronic Publication: 2013 Jun 26. |
| DOI: |
10.1128/CVI.00096-13 |
| Abstrakt: |
In this study, we assessed in humans the immunogenicity and safety of one dose (7.5 or 15 μg of hemagglutinin [HA]) of a whole-virion inactivated prepandemic influenza vaccine adjuvanted with aluminum hydroxide. The vaccine strain was made by reverse genetics from the highly pathogenic avian A/Chicken/Astana/6/05 (H5N1) clade 2.2 strain isolated from a dead bird in Kazakhstan. The humoral immune response was evaluated after a single vaccination by hemagglutination inhibition (HI) and microneutralization (MN) assays. The vaccine was safe and immunogenic, inducing seroconversion in 55% of the evaluated patients, with a geometric mean titer (GMT) of 17.1 and a geometric mean increase (GMI) of 3.42 after a dose of 7.5 μg in the HI test against the vaccine strain. The rate of seroconversion increased up to 70% when the dose of 15 μg was used. The percentages of individuals achieving anti-HA titers of ≥1:40 were 52.5% and 57.5% for the 7.5- and 15-μg dose groups, respectively. Similar results were obtained when antibodies were analyzed in an MN test. Substantial cross-neutralization titers (seroconversion in 35% and 52.5% of subjects in the two dose groups, respectively) were detected against heterologous clade 1 strain NIBRG14 (H5N1). Thus, one dose of this whole-virion prepandemic vaccine adjuvanted with aluminum has the potential to be effective against H5N1 viruses of different clades. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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