I found something that is opposite to what has been said on this forum about survival of hiv in environment, particulary on survival in dry blood, Is this true?
The truth of the matter is that the HIV virus (the AIDS virus) is one of the hardiest viruses known to mankind. According to a study from the Pasteur Institute in Paris (where the HIV virus was initially identified), French investigators found, "unusual stability of LAV-HTLV (virus) at room temperature." A culture of HIV virus was kept in a sealed tube in moist form. The Pasteur Institute reported, "The unusual stability of LAV-HTLV (the HIV virus-ed) at room temperature...No significant difference (in the amount of infectious virus-ed) was found between zero, two, or four days, and only a slight decrease (in infectiousness-ed) was noted with a delay in virus production, indicating a loss of a few infectious particles, after seven days at room temperature."
In the case of the dry virus kept at room temperature for periods of four and seven days, the French scientists reported: "A significant number of viral particles are then inactivated, but some infectious virus is still present since release of virus was seen on day 10." The report went on to say..."The results indicate that the virus is resistant at room temperature, either in dry form or in liquid medium...this resistance of LAV (the HIV virus-ed) may explain the appearance of some AIDS cases in non-risk groups...moreover, more safety precautions should be taken in laboratories, in hospitals, and by dentists who use a vacuum pump." (10)
Shortly after the Pasteur Institute study was published in September 1985, researchers from the Tumor Cell Biology Laboratory of the National Institute of Health in the United States reported similar findings, stating: "In a dried state, complete inactivation of virus required between three and seven days...(and in moist form-ed) complete inactivation of infectious virus was seen between 11 and 15 days of exposure at 36 to 37 degrees centigrade...Even under the most rigorous heating conditions commonly used to inactivate complement (54 to 56 degrees centigrade), infectious virus was found three hours after exposure." (11)
Subsequently, the CDC repeated these studies and presented their findings at the 3rd International Conference on AIDS in Washington D.C. in June 1987. Their report stated:
"The HIV virus survives for several days after being dried and placed on stainless steel strips in a desiccator jar at room temperature."