Top Ebola Scientists: Ebola More Likely to be Spread by Aerosol In Cold, Dry Conditions than In Hot, Humid Africa

Army’s Infectious Disease Research Unit and Discoverer of Ebola Strain Agree

We’ve repeatedly warned that this strain of Ebola might be spread by aerosols.

But there is a fascinating and terrifying wrinkle to this …

You might assume that hot, steamy places would be more likely to spread deadly germs than developed countries. But the opposite might be true.

In 1995, scientists from the US Army Medical Research Institute of Infectious Diseases (USAMRIID) reported in the International Journal of Experimental Pathology:

We also demonstrated aerosol transmission of Ebola virus at lower temperature and humidity than that normally present in sub-Saharan Africa. Ebola virus sensitivity to the high temperatures and humidity in the thatched, mud, and wattel huts shared by infected family members in southern Sudan and northern Zaire may have been a factor limiting aerosol transmission of Ebola virus in the African epidemics. Both elevated temperature and relative humidity (RH) have been shown to reduce the aerosol stability of viruses (Songer 1967). Our experiments were conducted at 240C [i.e. 75 degrees Fahrenheit] and < 40% RH, conditions which are known to favour the aerosol stability of at least two other African haemorrhagic fever viruses, Rift Valley fever and Lassa (Stephenson et a/. 1984; Anderson et a/. 1991). If the same holds true for filoviruses [Ebola is a type of filovirus], aerosol transmission is a greater threat in modern hospital or laboratory settings than it is in the natural climatic ranges of viruses.


Peter Jahrling was one of the authors of the report.  Jahrling was discoverer of the Reston strain of Ebola, and is now chief scientist at the U.S. National Institute of Allergy and Infectious Diseases.

In 2012, scientists from USAMRIID published a report in the journal Viruses finding:

Aerosol transmission is thought to be possible and may occur in conditions of lower temperature and humidity which may not have been factors in outbreaks in warmer climates.

Given that this is the first time that Ebola has spread out of West Africa to cooler, dryer nations, we may soon find out whether or not high temperature and humidity really do suppress the spread of Ebola by aerosols.

H/t Kit Daniels.

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  • MOLON LABE

    Oct 21, 2014 Ebola

    “Ebola” is a video critique of the role that the media plays in terrorizing the public by hyping and selling pandemic fears, including the current Ebola “crisis” in the US. Inspired by Jason Vosu’s video critique of the 2001 anthrax scare which is shown in this video and available here:

    https://www.youtube.com/watch?v=a91RTNA9Ejk

    • Crusader Of God

      They have to hype it up, so the masses line up for their vaccinations.

      • Joe Mac

        don’t get the vaccinations. They have Nano-bots programmed by the government to infect your brain to turn free thinking people into Government tit sucking sheep (a.k.a. sheepel )

  • TruthSquad

    Ebola is a deadly disease that spreads with human contact unlike anthrax. Health care workers that visit ebola stricken nations have no right to throw hissy fit because they went to Africa served at the Ebola patients and then came irrisponsibly ride Metro, bowl. Well, obviously we learned 2 important lesson from the healtcare workers and hospitals. 1 – Hospitals are following a dirty tradition of not bwing clean (staph infections were a problem before) 2 – We can not trust the returing healthcare patients to self monitor (They danger the public)
    CDC has reversed all of the decisions that was moderate look for Ebola. Common Sense is requires.

    • colormontage

      Well, we may want to think again what the CDC has told us. From Fox 2 today:

      Even as government officials express confidence that researchers know the key facts about Ebola, many questions crucial to preventing an outbreak in the United States remain unanswered, scientists told a workshop at the National Academy’s Institute of Medicine in Washington on Monday.

      Virtually all the unknowns have practical consequences, participants emphasized, making it foolish and perhaps dangerous to base policy on weak science.

      For instance, virologists believe that Ebola is spread when people come in contact with the virus-laden bodily fluids of those who are already sick and then touch their eyes, nose or mouth, allowing the virus to pass through mucous membranes and enter the bloodstream.

      But penetration through intact skin has not been definitively ruled out, said hemorrhagic-fever expert Thomas Ksiarek of the University of Texas Medical Branch (UTMB), who co-led a session on Ebola’s transmission routes.

      “Does bleach or hand sanitizer,” which people in West Africa are using to protect themselves from Ebola, “make the skin more susceptible” to being penetrated by the virus?, Peters wondered. “It’s a question that has to be asked.”

      Another crucial question is whether the virus can be spread by people who do not show symptoms. For months public health officials in the United States and elsewhere have insisted it cannot.

      But the possibility of such “subclinical transmission” remains very much open, said Dr. Andrew Pavia, chief of pediatric infectious diseases at the University of Utah.

      Nor do experts know whether the infectious dose of virus depends on how it enters the body, Pavia said.

      Also unknown is whether the time between exposure to Ebola and the appearance of symptoms depends on which bodily fluids someone contacted. If it does, then someone exposed through, say, saliva rather than blood might incubate the virus for longer than the 21 days officials have repeatedly said is the outer limit of the incubation period.

      That was the longest incubation time during the 1976 Ebola outbreak, said Dr. C.J. Peters, a field virologist at UTMB. But “I would guess that 5 percent of people” can transmit the virus after incubating it for more than three weeks, said Peters, whose battle against the Ebola outbreak in a monkey colony in Virginia was recounted in Richard Preston’s 1994 book “The Hot Zone.”

      Health officials emphasize the importance of taking the temperature of those exposed to Ebola, since people are not thought to be infectious until they run a fever of 100.4 F. (38 C). But at what temperature patients start shedding virus is not definitively known, said Dr. Michael Hodgson, chief medical officer of the Occupational Safety and Health Administration.

      Environmental mysteries also remain. Scientists do not know whether foam, gas, or liquid decontaminants are most effective for cleaning surfaces that might harbor Ebola. Nor do they know whether it can survive in sewers where, said Paul Lemieux of the National Homeland Security Research Center at the Environmental Protection Agency, rats “might pick it up.”

  • Rima E Laibow MD

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    When the Natural Solutions Foundation made it known that the identical Nano Silver 10 PPM solution was available through its website, http://Donate.DrRimaTruth.com, sent an Open Letter to the Heads of State and Ministers of Health of the original 4 Ebola-afflicted countries of West Africa and provided Nano Silver 10 PPM for clinical demonstrations in Sierra Leone and Liberia, we discovered that WHO/FDA/CDC stand in strong opposition to the dissemination of this information or its use. This despite the fact that WHO opined on August 12, 2014 that human experimentation without informed consent using pretty much anything, no matter how untried, was now “ethical” and was, in fact, ” a moral duty”.
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    FDA/FTC has sent notices to credit card companies that they should not process any sales despite the fact that US case law makes it clear that such a warning letter is not an indication of wrongdoing, especially since we are in compliance with the requirements of the warning letter. Thus, Chase Merchant Services/Paymentech and Godaddy/FirstData have refused to process card sales for a totally legal nutrient, restraining trade and damaging the freedom of consumers to make health choices that are meaningful to them.
    Finally, why such opposition to solving the Ebola problem? Could it be that genocidal agendas really are being played out here? Could it be that the regulatory and health watchdog agencies are so controlled by vaccine and antibiotic profit related corporate interests that thousands, hundreds of thousands, millions or even billions of lives are being discarded to insure drug dollars flowing? Nano Silver 10 PPM, by the way, costs, at maximum, less than $0.30 per serving.
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    Yours in health and freedom,
    Dr. Rima
    Rima E. Laibow, MD
    Medical Director
    Natural Solutions Foundation
    http://www.DrRimaTruthReports.com