1. The evidence for infectiousness in chronic fatigue syndrome is huge. 2. Repeated attempts at definitive proof of prion infectiousness have failed. 3. The infectiousness of laughter also makes it a particularly interesting social activity to explore. 4. The plateau's infectiousness takes effect. 5. Within a year, they may have a gizmo to detect both its presence and possible infectiousness . 6. Those are the main factors affecting the spread, duration and infectiousness of droplets containing infectious particles. 7. The new reincarnation of " Baltimore, " staged by the estimable Joe Mantello, holds on to that infectiousness . 8. Its infectiousness , however, gives it the potential to make a lot of other animals less productive too, very quickly. 9. More lyrics about political unrest and injustice, more songs that combine the abrasiveness of rock with the infectiousness of hip-hop. 10. It is the very infectiousness of HIV that makes it attractive for gene therapy, which so far has not lived up to its expectations.