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Pirbright research to make vaccines more accessible
Pirbright research could boost vaccine yields by up to tenfold. 
Scientists to use gene-editing technology to remove major barrier to viral replication

Livestock vaccines may soon be more accessible and affordable thanks to funding from the Livestock Vaccine Innovation Fund.

The funding has been awarded to the Pirbright Research Institute to allow previous immune response research to continue. The research will involve using gene-editing technology to remove chiFITM proteins in chicken cells - one of the major barriers to viral replication - and could boost vaccine yields by up to tenfold.

Dr Mark Fife from Pirbright's Genetics and Genomics Group, which is leading the research, explains: “Many vaccines for both animal and human, are produced by going a weakened form of the virus in chicken eggs or cells, which are then extracted for use.

“Although chiFITM may help protect chickens from viral infection, the protein actually hinders vaccine productions, as it prevents the weakened virus from replicating at high levels and reduces the amount of vaccine that can be made.

"Our new research will involve using a gene-editing system called CRISPR/Cas9 to remove the chIFITM genes in chicken cells, therefore overcoming one of the barriers for viral replication, and boosting the levels of vaccine virus produced.”

This boost to vaccine production will make vaccines cheaper to produce and more accessible to livestock owners in developing nations. The scientists will first focus on increasing flu vaccine yields, but the method could also be applied to multiple livestock diseases and potentially human diseases too.

When the researchers have piloted the technique, they will work with commercial partners Horizon Discovery Group plc to bring this new technology to market. It is hoped the technology will commercially available as soon as 2021. 

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Vets save premature penguin chick

News Story 1
 Vets have saved a tiny Humboldt penguin chick after her egg was accidentally broken by her parents. Keepers at ZSL London Zoo were shocked to find the chick, named Rainbow, still alive and rushed her straight to the Zoo’s on-site veterinary clinic.

It was a little way to go until the chick should have hatched, so the process was touch and go. Vets removed bits of shell from around the chick with tweezers until she could be lifted out and placed in a makeshift nest.

Rainbow is now in a custom-built incubation room where she spends her days cuddled up to a toy penguin. Keepers will hand-fed Rainbow for the next 10 weeks until she is healthy enough to move to the penguin nursery.  

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BVA president John Fishwick said: “The infographic is not intended to be a league table but to allow people to understand what aspects of animal health and welfare are addressed by assurance schemes so that they can decide which scheme best aligns with their own individual preferences and priorities."