French researchers: High temperatures ineffective against coronavirus

[highplainsdem]

Source: The Hill

The novel coronavirus can survive in high temperatures, researchers said, casting doubt on suggestions that the threat will subside in the summer.

Researchers from the University of Aix-Marseille in France, led by Professor Remi Charrel and Boris Pastorino, found that the virus survived in 140-degree Fahrenheit temperatures typically used to disinfect research labs, the Jerusalem Post reported.

It took 15 minutes of exposure to 197.6-degree temperatures to kill the virus, the newspaper noted, adding that the study has yet to be peer-reviewed.

Researchers did say the lower temperature should be sufficient to deactivate the virus in samples with smaller loads, but added that the higher temperature was necessary for larger loads, and concluded disinfecting chemicals were a better option.

-snip-

Read more: https://thehill.com/policy/healthcare/493530-french-researchers-high-temperatures-ineffective-against-coronavirus

[Bernardo de La Paz]

1. It also means warmer weather is no panacea. . . . nt

[Drahthaardogs]

2. Higher humidity WILL help a bit

Dry winter air keeps particles suspended in the air longer, so a nice humid summer can help to a degree.

[Curtis]

10. I'm not sure that's true either

All you need to do is look how it is spreading in the Caribbean right now with heat and high humidity.

[Hugin]

3. I've been curious as to, if sunlight, or more specifically ultra-violet light has any effect on...

viruses.

I know it's effective against bacteria, but, since viruses aren't really alive. (Well, they're only alive when they're replicating.) Does light have any sanitizing benefit? Is mechanically breaking up the virus by scrubbing with chemical surfactants and alcohols really the only means of ensuring their destruction?

I know, I'm on the Internet and should probably do some looking around. But, if anyone has some insights, I'd like to hear them.

[JudyM]

4. Yes.

UV lights are used for disinfection in hospitals.

They are harmful to our eyes and skin, but there is a kind of UV (called FAR-UV) that has been developed for use in situations of human exposure. UV can also be used to kill viruses circulating in HVAC systems.

[Hugin]

6. Interesting!

Well, thanks! That makes me feel a little better.

Unfortunately, for something the size of a virus there's a whole lot of shade around.

It alarmed me reading that article citing it required temperatures of around 197F to destroy the virus... That's hotter than a coffee boiler for crying out loud.

[JudyM]

25. There's other research suggesting it's effectively deactivated at 160 degrees.

[Hugin]

31. Now, we're getting into a temperature that's achievable in the average kitchen...

On the stove top or in an oven.

Nice to know a steam boiler or autoclave isn't needed.

160F is still beyond human endurance or a fever. However, I guess in sterilizing something a number of viral vulnerabilities could be exploited simultaneously.

Thanks for the info.

[GumboYaYa]

34. Far UV or UVC

It has more energy but cannot penetrate skin below like a single cell. It is blocked out by the atmosphere so it is not in natural sunlight. There is some evidence that it kills coronavirus. https://www.sciencedaily.com/releases/2020/04/200414173251.htm

[JudyM]

35. Right, but unfortunately neither is widely available.

I was looking into it as a way to help clear the air at my mother’s assisted living. If only!

[IronLionZion]

5. Also why high fevers haven't been able to kill it

a human body can only take so much.

And for surfaces, we can't count on the sun to kill it in outdoor areas this summer.

This virus is really diabolical.

[roamer65]

15. The UV light is what gets them.

[IronLionZion]

21. Only a certain type

for most of us, it's better to use soap or disinfectant for surfaces.

I looked into UV sanitizers for phones and other objects and just don't trust them to do it completely.

[roamer65]

29. It all in the time in the light.

Boiling water is a sure kill if the object can be immersed.

[MiniMe]

7. Not a surprise, one of the early hotspots was Singapore. It is always hot there

It is basically on the equator.

[Texin]

13. They get a lot of rain and it's always humid there. Viruses tend to do well in humidity.

[SunSeeker]

8. So much for Trump saying it would "disappear, like magic" with the warm weather.

But we all knew that wasn't true when he said it.

[BootinUp]

9. tough little pandemic bastard. nt

[certainot]

11. so cooking the newspaper for 10 min at 200 may not be enough...... theoretically

[NCjack]

16. You can iron it.

[certainot]

20. you're right! but that could really 2-dimentionalize the literary experience. and i hate creases

[NCjack]

22. Belgium King Leopold II required his paper to be ironed. nt

[certainot]

26. and he was a shit- looks like from his wiki page he killed and mutilated 1000s of congolese

in plundering the country

[Texin]

12. Okay. This is becoming ridiculous!

Just yesterday I was reading a study - conducted by scientists - who had found evidence that the virus dies in heat and extremely quickly if exposed to direct sunlight, or I guess, UV light. The French doctors/scientists always come out with some sort of contrarian notion that flies in the face of other findings. They maintained for nearly two months that ibuprofen is dangerous to control fevers because it supposedly provokes a more chaotic immune response (i.e., causing an extreme immune response that increases overall organ inflammation -- despite the fact that NSAIDS have long been used to control inflammatory responses in the body). It was announced yesterday or maybe the day before that ibuprofen is just fine and safe to take in this disease process. I expect that in a couple or more weeks, the French doctors/scientists are going take back what they've not said about the effects of heat and sunlight/UV light.

[logme]

18. The ANSM confirmed their conclusions regarding ibuprofen, nothing has change so far

Hi,

I think this still is the position of health authorities in France.

To my knowledge the only thing that might have change is that online sales of Ibuprofen were to be suspended up to the 15th of April.

The objective was to avoid seeing some people prioritizing this popular "product" when trying to self medicate.

Their recommendations was then made widely known to the public.

And it is not that it will kill you or anything like that but that its use is deemed counterproductive :

The ANSM (National Medicines Safety Agency) reminds consumers of the rules for a proper use of fever medicines:

In case of pain and / or fever, especially in the context of infection, it is best to use paracetamol. Indeed, anti-inflammatory drugs (including ibuprofen) can mask an infection and potentially have an aggravating effect in certain situations. If you are currently being treated with anti-inflammatory drugs or corticosteroids, do not stop your treatment and contact your doctor if necessary.

[appalachiablue]

24. I saw that French study about heat/light as well. Crazy confusing

info. The ibuprofen and immune system dangers from weeks ago is apparently wacked as well.

[logme]

27. what is that ibuprofen/immune system story about ?

Hi,

What exactly are you referring to ?

Because the results of the ANSM have yet to be challenged or disproved. So unless we have widely contradictory news sources, we might actually not be speaking about the same issues.

The recommendation in France resulted from an ongoing official series of studies about ibuprofen & kétoprofène effects in relation to respiratory diseases with inflammatory symptoms. They started in 2018 and are still ongoing. They did actually revealed several issues related to the use of those molecules, those results motivated an official warning and the funding of further studies.

To my limited knowledge no study has been published in France so far on their specific interaction with covid-19 or the immune system.
However since at the moment the covid-19 classify as a respiratory syndrome, the precautionary principle applies. Hence the recommendation is still in place until it is proven those results are false or that they do not apply to covid-19


Since there so many studies & rumors about the cobid-19 we may not be talking about the same thing.

[appalachiablue]

28. It was cautioning people about taking ibuprofen if they are

already using immune suppressant meds for RA, Crohn's and other conditions. Then I read another report from Europe I think that contradicted this advice. Bottom line, check with your doctor.

[sdfernando]

32. It does say that this study has not been peer reviewed

always take these with a grain of salt until other have confirmed and/or duplicated the study and results.

[roamer65]

14. So boiling water kills it.

I have been using boiling water to disinfect my mask.

[GoneOffShore]

17. So, found some good info on the NYTimes about precautions to take

Is the Corona Virus On My Hair?

[Baclava]

19. Dr Sanjay last night was saying soap was more effective cleaning countertops than sanitizer

Reason being you use dish soap to clean baking pans of fats, not alcohol based products, and that soap breaks down lipids in virus better

[StarryNite]

30. That makes sense.

[Cha]

23. KR!

[Steelrolled]

33. I put very little confidence into the view of "experts" and "researchers" these days.

We are in the world where "put out doom and clicks will boom", the reporting is poor and selective (nothing new), and the motives of the experts and researches are not necessarily pure.