EU INDUSTRIAL AND SOCIETAL PROBLEMS:
Brucellosis is consistently ranked as the world’s most common and widespread zoonotic disease, meaning that it normally exists in animals but it can also infect humans. In livestock, it causes devastating production losses in low-income countries accounting in more than €3bn per year. In humans, there are 500,000 new cases annually requiring long-term hospital treatment and with devastating complications in pregnant women.
Brucellosis is endemic in most Asia, Africa and LATAM and is prevalent in the EU Mediterranean regions. Between 2009-2014, Europe spent more than €270m in control and eradication programs mainly in Italy, Greece, Portugal and Spain. Only around 20 developed countries have eradicated the disease but, in a global world with international trading, people travelling all around the world and potential threat of bioterrorism, outbreaks may take place anywhere. As a vaccine for humans does not exist, the most rational approach for preventing human brucellosis is the control and elimination of the infection in animals. It requires an integrated approach involving vaccination programs and/or ‘Test & Slaughter’ of infected animals, among other measures. However, existing vaccines have four main problems: 1) They are unsafe for pregnant, lactating animals and male adults; 2) They interfere with the standard diagnostic tests, causing the DIVA problem (to differentiate between infected and vaccinated animals); 3) In case of infecting humans, existing vaccines are resistant to antibiotics of choice for treating Brucellosis in human beings; 4) As a result, existing vaccines require complex management systems and costly diagnostic techniques that are not appropriate for developing countries; in Europe, control programs are based on tests for animal check-ups and compensation to farmers for slaughter of the infected animals, with vaccination prohibited or highly restricted to areas with higher prevalence of Brucellosis (as example, see programs implemented in Greece).
OUR SOLUTION:
GreenVac developing the first vaccine against Brucella melitensis in small ruminants that overcomes the main drawbacks of existing vaccines and will be safe and viable for use in all countries across the developing world. Our vaccine has been developed by the team of Prof. Maria-Jesus Grilló, a world leading authority on brucellosis and partner in GreenVac. BGV1´s main innovations are: 1) BGV1 is avirulent for animals, 2) BGV1 eliminates or minimises the DIVA problem (to Differentiate between Infected and Vaccinated Animals) and does not interfere with diagnostic tests, 3) the vaccine has very low potential transmissibility and, in case of infection, it could be treated in combination with standard antibiotics, and 4) it has the potential to be a non-specific vaccine that is effective in different animals (e.g. sheep, goats and cattle) and for more than one Brucella strain. The BGV1 vaccine fulfils all the requirements, exhibiting a safe profile with an enhanced protective efficacy, no residual virulence and no serodiagnostic interference.