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New model to predict effectiveness of livestock vaccines
The study has implications for the design of vaccines and vaccination programmes in livestock.

Researchers use model to study effectiveness of PSSR vaccines 

A new model to predict the effectiveness of vaccines in livestock has been developed by scientists at The Roslin Institute.

Researchers found that, when applied appropriately, even imperfect vaccines can prevent, mitigate or eliminate the prevalence of disease.


Scientists say the study has implications for the design of vaccines and vaccination programmes in livestock. Professor Andrea Wilson from the Roslin Institute explains:


“Veterinary vaccines often only confer limited immunity and thus may not prevent infection. In this study, we developed a model that combines epidemiological consequences of different vaccination strategies and different vaccine properties applied to livestock. 


“The model is successful in predicting the effectiveness of vaccines in livestock.”


The overall aim of vaccination is to protect animals from disease and reduce the risk of disease outbreaks. The new model shows that combining diverse vaccine properties could have a multiplicative effect and may, therefore, be more effective. 


In the study, scientists used the model to study the effectiveness of vaccines to combat Porcine Reproductive and Respiratory Syndrome (PRRS) virus.


Endemic in most pig-producing countries, PRRS causes breathing problems and can be fatal in young animals. However, vaccines to prevent the spread of the disease have mostly failed

Scientists believe the new model shows that the control or elimination of PSSR through vaccination may well be in reach, so long as the vaccine speeds up recovery and reduces virus replication.

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Special imports digital service set to change

News Story 1
 From Monday, 15 July, Special Import Certificate (SIC) applications will only be accepted via the Veterinary Medicines Directorate's (VMD's) new special imports digital service.

The original online special import scheme will be decommissioned. The VMD says that the new service is easier to use, more secure and reliable, and meets accessibility legislation.

The VMD is urging veterinary surgeons who have not yet signed up for the new service to do so before 15 July. The new digital service can be accessed here

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News Shorts
RCVS course explains concerns process

A free, online course from the RCVS Academy has been launched, designed to clarify RCVS' concerns procedure.

The content will give veterinary surgeons and veterinary nurses a better understanding of the process, and what they can expect if a concern is raised about them. It includes details of common concerns.

The interactive resource has been developed in collaboration with Clare Stringfellow, case manager in the RCVS Professional Conduct Team.

Ms Stringfellow said: "We appreciate that concerns can be very worrying, and we hope that, through this course, we can give vets and nurses a better understanding of the process and how to obtain additional support."

The course can be accessed via the RCVS Academy. Users are encouraged to record their learning for CPD.