They said in the interview that they are targeting the big three as well as a bunch more but are staying away from everything. Did you see the interview?
Rubo, last time i looked this is about life saving detection. All 1900 bacterias won't kill you, but a certain few will. This is danger zone detection that WILL save lives. If you were in the ocean with God knows how many different types of fish ( lets just say 1900 ) what would be the one you would want to be detected as the the most dangerous and eliminated if you were in a bubble tank with the two, the snapper or the SHARK? Case closed!