tetano
Editor, Senior Moderator
Biochem Biophys Res Commun
. 2021 Feb 4;545:145-149.
doi: 10.1016/j.bbrc.2021.01.058. Online ahead of print.
H7N9 pandemic preparedness: A large-scale production of a split inactivated vaccine
Eduardo Alfredo Adami[SUP] 1 [/SUP], Stefanni Liliane Chavez Rico[SUP] 2 [/SUP], Milena Apetito Akamatsu[SUP] 1 [/SUP], Cosue Miyaki[SUP] 1 [/SUP], Isa?as Raw[SUP] 3 [/SUP], Dourival de Oliveira[SUP] 1 [/SUP], Priscila Comone[SUP] 1 [/SUP], Ricardo das Neves Oliveira[SUP] 1 [/SUP], Maria Leonor Sarno de Oliveira[SUP] 2 [/SUP], Patr?cia Ant?nia Estima Abreu[SUP] 2 [/SUP], Carolina Yumi Takano[SUP] 1 [/SUP], Maur?cio Meros[SUP] 1 [/SUP], Alessandra Soares-Schanoski[SUP] 4 [/SUP], Paulo Lee Ho[SUP] 5 [/SUP]
Affiliations
Abstract
In March 2013 it was reported by the World Health Organization (WHO) the first cases of human infections with avian influenza virus A (H7N9). From 2013 to December 2019, 1568 cases have been reported with 616 deaths. H7N9 infection has been associated with high morbidity and mortality rates, and vaccination is currently the most effective way to prevent infections and consequently flu-related severe illness. Developing and producing vaccines against pandemic influenza viruses is the main strategy for a response to a possible pandemic. This study aims to present the production of three industrial lots under current Good Manufacturing Practices (cGMP) of the active antigen used to produce the pandemic influenza vaccine candidate against A(H7N9). These batches were characterized and evaluated for quality standards and tested for immunogenicity in mice. The average yield was 173.50 ? 7.88 μg/mL of hemagglutinin and all the preparations met all the required specifications. The formulated H7N9 vaccine is poorly immunogenic and needs to be adjuvanted with an oil in water emulsion adjuvant (IB160) to achieve a best immune response, in a prime and in a boost scheme. These data are important for initial production planning and preparedness in the case of a H7N9 pandemic.
Keywords: Adjuvant; H7N9 pandemic; Inactivated vaccine; Influenza vaccine; Pandemic preparedness.
. 2021 Feb 4;545:145-149.
doi: 10.1016/j.bbrc.2021.01.058. Online ahead of print.
H7N9 pandemic preparedness: A large-scale production of a split inactivated vaccine
Eduardo Alfredo Adami[SUP] 1 [/SUP], Stefanni Liliane Chavez Rico[SUP] 2 [/SUP], Milena Apetito Akamatsu[SUP] 1 [/SUP], Cosue Miyaki[SUP] 1 [/SUP], Isa?as Raw[SUP] 3 [/SUP], Dourival de Oliveira[SUP] 1 [/SUP], Priscila Comone[SUP] 1 [/SUP], Ricardo das Neves Oliveira[SUP] 1 [/SUP], Maria Leonor Sarno de Oliveira[SUP] 2 [/SUP], Patr?cia Ant?nia Estima Abreu[SUP] 2 [/SUP], Carolina Yumi Takano[SUP] 1 [/SUP], Maur?cio Meros[SUP] 1 [/SUP], Alessandra Soares-Schanoski[SUP] 4 [/SUP], Paulo Lee Ho[SUP] 5 [/SUP]
Affiliations
- PMID: 33550095
- DOI: 10.1016/j.bbrc.2021.01.058
Abstract
In March 2013 it was reported by the World Health Organization (WHO) the first cases of human infections with avian influenza virus A (H7N9). From 2013 to December 2019, 1568 cases have been reported with 616 deaths. H7N9 infection has been associated with high morbidity and mortality rates, and vaccination is currently the most effective way to prevent infections and consequently flu-related severe illness. Developing and producing vaccines against pandemic influenza viruses is the main strategy for a response to a possible pandemic. This study aims to present the production of three industrial lots under current Good Manufacturing Practices (cGMP) of the active antigen used to produce the pandemic influenza vaccine candidate against A(H7N9). These batches were characterized and evaluated for quality standards and tested for immunogenicity in mice. The average yield was 173.50 ? 7.88 μg/mL of hemagglutinin and all the preparations met all the required specifications. The formulated H7N9 vaccine is poorly immunogenic and needs to be adjuvanted with an oil in water emulsion adjuvant (IB160) to achieve a best immune response, in a prime and in a boost scheme. These data are important for initial production planning and preparedness in the case of a H7N9 pandemic.
Keywords: Adjuvant; H7N9 pandemic; Inactivated vaccine; Influenza vaccine; Pandemic preparedness.