 Sexual transmission and person-to-person transmission outside the household. And in fact, no stories so far of animal involvement whatsoever. So this is all person-to-person, definitely sexual transmission. And so we assumed when we were first looking at this, this has got to be clade 2 appearing in Africa in a different way. We then sequenced it and actually it turned out to be a variant of clade 1. So this strain we're now calling clade 1b. What's the mortality rate of this new strain?