Not true. HIV is a very fragile virus, it dies almost immediately when exposed to air. Meaning, if the body fluid hosting it dries up, its dead.
From a "chances you'll get it if exposed" perspective, HIV is one of the least scary viruses out there. Hepatitis, on the other hand, is much more resilient and can hang around for days. Which is why EMS personnel are vaccinated against Hep B, leaving only Hep C as a possible exposure problem.
Supposedly the guy in Texas was infected when he carried an infected and symptomatic woman from a car into the hospital, which sounds like Ebola is a more easily spread than some of the media stories out there. Not that it warrants full panic mode, but the level of precautions that the medical personnel are taking seem more appropriate.
