Virus Replicon Particles as Rift Valley Fever Vaccines

Rift Valley fever (RVF) virus primarily infects animals but also has the capacity to infect humans. The disease causes abortion and death among RVF-infected livestock, resulting in substantial economic loss to people living in many parts of Africa and Arabian Peninsula. Currently, there is no commercial vaccine for RVF. CDC scientists have developed a RVF virus replicon particle (VRP) vaccine candidate. Research findings revealed that immunization of mice with a single dose of the RVF-VRP was found to be safe and elicited immune response that offered 100% protection following exposure to lethal dose of virulent virus. RVF-VRPs have the potential to become effective and efficient RVF vaccines in livestock animals and humans.
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