Only the Nef proteins of HIV-1 and its immediate SIV relatives do not perform this function. The group may also examine whether Nef variation among HIV-2 strains might explain differences in the price of progression to disease in contaminated humans.. AIDS, an evolutionary accident? AIDS, a fatal disease in human beings, may partly be the result of an evolutionary accident, scientists heard at the Culture for General Microbiology’s 162nd meeting being held this week at the Edinburgh International Meeting Centre. Previous studies established that one of the key differences between the method HIV-1 behaves in humans and carefully related SIVs behave in monkeys can be that when humans are contaminated with HIV-1 the disease fighting capability becomes highly stimulated.Nevertheless, the same increase had not been found among residents of Lower Manhattan. So far, wellness officials say there have been around 2,000 cancer diagnoses related to 9/11. Several studies have found a higher incidence of sarcoidosis among rescue also, recovery and clean-up workers, an inflammation that may affect any organ, but typically affects the lungs. And PTSD remains a persistent problem. A number of large research conducted by New York City’s Division of Health and Mental Hygiene looked at the vast impact the events had on the populace.