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A new study in mice suggests that it may be possible to create a universal flu vaccine, according to a new report.

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A new study suggests it may be possible to create a universal flu vaccine.

Rodents to the rescue; Based on a study conducted by researchers from the US and Canada on mice and ferrets, they have created a vaccine made of mRNA lipid nanoparticles that contains antigens from each of the twenty known subtypes of influenza A and B viruses.

The study found that it is challenging to predict which flu strain will start the next flu pandemic, despite increased global surveillance, which emphasises the significance of a universal vaccine. By including antigens unique to each subtype rather than just a smaller set of antigens shared by subtypes, the scientists’ method differed from earlier attempts to create a universal flu vaccine, according to the study published in the journal Science.

Following the success of mRNA vaccines against SARS-CoV-2, researchers created 20 distinct nanoparticle encapsulated mRNAs, each of which encoded a different hemagglutinin antigen, a highly immunogenic flu protein that aids virus entry into cells. Four months after vaccination, the mice’s antibody levels remained largely stable.

According to the study, multivalent protein vaccines made using more conventional techniques elicited fewer antibodies and were less protective than the multivalent mRNA vaccine in the animals. In early November, an early-stage study was announced by US pharmaceutical company Pfizer Inc. and its German partner BioNTech SE to assess a combination vaccine targeting COVID-19 and influenza.

According to the study lead by Claudia Arevalo from University of Pennsylvania, the vaccine produced high levels of cross-reactive and subtype-specific antibodies in mice and ferrets and could shield animals from disease symptoms and demise following infection with both antigenically matched and mismatched influenza strains.

The study found that it is challenging to predict which flu strain will start the next flu pandemic, despite increased global surveillance, which emphasises the significance of a universal vaccine.

The study found that it is challenging to predict which flu strain will start the next flu pandemic, despite increased global surveillance. This emphasises the significance of a universal vaccine according to the study’s lead, Claudia Arevalo from University of Pennsylvania. The new vaccine created by researchers from the US and Canada contains antigens from each of the twenty known subtypes of influenza A and B viruses. This allows for high levels of cross-reactive and subtype-specific antibodies in mice and ferrets that can shield animals from disease symptoms and demise following infection with both antigenically matched and mismatched influenza strains.

By including antigens unique to each subtype rather than just a smaller set of antigens shared by subtypes, the scientists’ method differed from earlier attempts to create a universal flu vaccine, according to the study published in the journal Science.

Following the success of mRNA vaccines against SARS-CoV-2, researchers created 20 distinct nanoparticle encapsulated mRNAs, each of which encoded a different hemagglutinin antigen, a highly immunogenic flu protein that aids virus entry into cells.

In early November, an early-stage study was announced by US pharmaceutical company Pfizer Inc. and its German partner BioNTech SE to assess a combination vaccine targeting COVID-19 and influenza.

The study will assess the safety, tolerability, and immunogenicity of the vaccine in up to 144 healthy adults aged 18 years and older.

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