It definitely has the potential for being used in vaccinations, but DNA vaccines have never worked well in humans. When compared to the other delivery mechanisms, it makes very little sense. There’s also risk associated with the process as adding this DNA sequence may result in a recombination event within the host genome. Additionally, there’s possible issues with expressing tolerant T cells due to DNA vaccines. This would make the immume response less effective. The finding is more surprising as it demonstrates horizontal gene transfer taking place across different eukaryotic organisms, or at least that’s my take on it.