experts can't yet predict the trajectory of the virus because "honestly speaking, we do not know the virus yet."
As this virus is new, so we don't know much about coronavirus. In the US, CDC (Centers of Disease Control and Prevention) has grown it in culture, and encourages scientists to study below (you can see that includes the study of temperature to the virus):
https://www.cdc.gov/coronavirus/2019-ncov/about/grows-virus-cell-culture.html
• Antiviral research: This includes research aimed at testing the ability of existing or experimental antiviral medications to treat or prevent infection with SARS-CoV-2.
• Pathogenesis research: This includes research to determine the various ways the virus can be transmitted to a host, the severity of illness it causes in a host, how much virus is produced in the body, and what organs the virus can spread to within the body.
• Virus stability research: This is research that indicates how long the virus can survive under certain conditions, such as how long the virus can remain viable and infectious on surfaces, and the temperatures at which it can survive.
The theory was that a hot climate will result in a regression of the viral infection, but now new studies say that there is no relationship. The world is still confused about this new viral outbreak
There is no established correlation between the variations in temperature and spread of coronavirus (COVID-19).
https://economictimes.indiatimes.com/news/politics-and-nation/no-correlation-between-temperature-variations-and-coronavirus-spread-experts/articleshow/74560907.cms
There is no scientific, logical evidence to support this statement.
There is a great paucity of information on the survival of novel Corona virus (COVID- 19) at environmental temperature above 30 degree centigrade.
Russian scientists, currently working on a vaccine, say that the virus in question cannot survive at temperatures above 56 degrees C, with an ideal propagation range of 36 - 38C (i.e. it "feels" comfortable in the human body).
about Corona virus Survival Times at Relative Humidities & Air Temperatures in Hours & Days we can say that:
The survival times at 80% RH and 40°C [104°F] were less than 7 hours for proxies of corona viruses on stainless steel.
The survival times at 50% RH and 40°C [104°F] were more than 24 hours. There was a reduction in the ratio of virus to -3 Log10 (Nt/N0) in 24 hours.
The survival times at 20% RH and 40°C [104°F] were more than 120 hours. There was a reduction in the ratio of virus to -3 Log10 (Nt/N0) in 120 hours.
The survival times at 50% RH and 20°C [68°F] were less than 7 days on stainless steel.
Yes, Covid-19 Coronavirus becomes less active only at 26-27 degrees C. Unfortunately, this also means that the arrival of spring and summer in the temperate climate zone in the northern hemisphere of the planet does not necessarily mean a significant reduction in the activity of this virus. This means that the virus is highly contagious regardless of the climate zone and season.
Best wishes.
Dariusz Prokopowicz
I think temperature til 40 c do not affect viruse ,evidence on this virus can live in human that suffer from fever so increasing sun temerature with uv light just this only can stop viruse difussion .
I don't think so.
It remains active in living host at around 36-37 degree C. But can get denatured outside of the host at different temp in different time periods.
According to national news broadcasts in America, the COVID-19 virus can definitely survive in temperatures higher than 30 degrees. They emphasize that it is a hoax being spread by ignorant persons being interviewed on television to say that using the heat from a hair dryer will kill COVID-19. COVID-19 thrives in the bodies of persons with weakened immune systems, persons whose normal temperature is about 98.6 degrees.
Only social distancing can stop the spread of the COVID-19 virus, which is extraordinarily contagious!!!!!
As of March 24, 2020, COVID-19 is spreading like wildfire. The appropriate metaphor is war: humanity is locked in a war against COVID-19, and the only defense is SOCIAL DISTANCING. Every person is a soldier in this war. Ironically, the good soldier supports fellow fighters by maintaining distance from them.
i think it can survive as long as there is medium to keep the virus alive -droplets spcecially for covid-19 ..
When our body normal temperature is above 30 degree Celsius and the affected person boby temperature is also very well above this limit, virus is becoming strong. It is also noticed that regions between line of capricorn and line of cancer are getting affected by the virus
Coronavirus successfully survives in human body having the temperature around 37o C. Therefore, it is a big myth that coronavirus (COVID-19) cannot survive in temperatures more than 30o C.
The day SARS-CoV-2 cannot survive 30 degrees temperature, that day we are winning the war. Of course, we are winning because the virus won't survive our body physiology. It can fly around, but the moment it enters a living human body, then it dies or go into inactive dormancy which will definitely save us. Our body temperature is 37 deg (or very thinly thereabout), how come would a virus that cannot withstand 30 deg now threaten us?. The lie should be binned.
@Arvind Singh : While the virus survives in infected individuals on has to take into account that in the cells the virus has favorable conditions, allowing its replication. Not much is known about the virus´ survival outside infected cells.
Amy Johnson
,Your reference to information about SARS is appropriate because my understanding is that COVID-19 is the current terminology for SARS-COVID-2.
In other words, SARS-COVID-2 is equivalent to COVID-19. Best regards.
Please follow the link below
https://www.bloomberg.com/news/articles/2020-03-28/professor-sees-climate-mayhem-lurking-behind-covid-19-outbreak
Coronavirus is not new to the world.This class of viruses was discovered in 60's.These are named so because of their structure which contains spikes resembles with Sun's corona. Till 2018 some types of coronavirus cause common cold in humans and all these are seasonal maily occur in winter.But this novel coronavirus type which comes into picture in 2019 is totally different in nature. No one can tell is it seasonal like other coronaviruses or not.
You can see a video uploaded by Science in youtube.
https://youtu.be/Jd3CN00DUwY
In order to re-cycle worn masks it is adviced to heat worn masks up to degrees of 65 to 70 centigrade/celsius for 30 mins (e.g. in an oven/furnace/warm case) to let virus particles be destroyed (which are consisting out of proteins, mind)...
Desinfection with alcohol also works...
@Nancy Ann Watanabe: The correct terminology is: The virus SARS-CoV-2 causes the disease COVID-19.
Some strain may die above 30-degree Celsius but not all. But it has a relation to
temperature and humidity. Article The Effects of Temperature and Relative Humidity on the Viab...
Christian G Meyer ,
Thank you! Here is a CleanLink statement:
"According to the U.S. Centers for Disease Control and Prevention (CDC), there are actually multiple types of coronaviruses, some of which commonly cause mild upper-respiratory tract illnesses. There are seven types of coronavirus that infect humans, three of which evolved from animal strains.
Because there are many coronavirus types, referring to it simply as "coronavirus" is very general. The CDC and World Health Organization (WHO) encourage experts to use COVID-19 when referring to this new disease, a novel (or new) coronavirus that has not previously been seen in humans. In COVID-19, ‘CO’ stands for ‘corona,’ ‘VI’ for ‘virus,’ ‘D’ for disease and 19 indicates the year it was discovered.
Just as the general public has become familiar with this terminology, officials have also begun using SARS-CoV-2 in connection with the recent outbreak. Severe acute respiratory syndrome coronavirus 2, shortened to SARS-CoV-2, is actually the virus that causes COVID-19 (the disease). As the name indicates, this virus is genetically related to the SARS-associated coronavirus (SARS-CoV) that caused an outbreak of severe acute respiratory syndrome (SARS) in 2002-2003, however it is not the same virus.
How do all these terms fit together? "Coronavirus" is a generic term that includes a large family of viruses, similar to saying someone has the flu. SARS-CoV-2 is a specific virus that can cause COVID-19, a disease. As WHO explains, this is similar to differentiating HIV and AIDS — HIV is a virus that causes AIDS. Outlined on their website, "People often know the name of a disease, such as measles, but not the name of the virus that causes it (rubeola). . . .
Whether talking about the virus or the disease, it's important to practice and share best practices for cleaning and disinfecting."
https://www.cleanlink.com/news/article/SARS-CoV-2-and-COVID-19-Whats-The-Difference--25264
Amy Johnson
,I appreciate your accuracy and precision in telling me that "SARS and COVID-19 share 81% of the same genetic sequence." Thank you!
This is not true at all, as the coronavirus can survive in temperatures in excess of 50 degrees, as the heat is currently overwhelmingly in the majority of the Arab Gulf states, and the virus is active with great force.
Though no a clear-cut evidence that COVID recedes at this temperature,but we hope that indeed!
The first Covid-19 death has Been reported in Mumbai's biggest slum, with 700,000 inhabitants...
If so then no infection will be occurred because human temperature is above 30, which is 37????!!!
This is not true, Corona virus may be survived more than 55 degree. we have to apply other parameters like external magnetic field, attachment of nano sized materials with corona virus or diffusion of virus by specific energy beam etc.
The corona virus CAN survive in temperatures more than 30 degrees! COVID-19 is the most recent new (novel) viruses in a long line of viruses, including SARS-Covid-2. COVID-19 is much more contagious than previous viral strains, which is the reason why it is reaching unprecedented strength. Similarly, to World War I and World War II, COVID-19 is WORLD PANDEMIC I.
There are lots of uncertainty over this virus and few things doesnot have any evidence or no clue ! Higher temperature will kill the viruses but there is no clear evidence about the cut of temperature.
Perhaps this somewhat related article was already mentioned above. If not here it is:
Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces
JF - Applied and Environmental Microbiology
JO - Appl. Environ. Microbiol.
SP - 2712
LP - 2717
DO - 10.1128/AEM.02291-09
VL - 76
IS - 9
AU - Casanova, Lisa M.
AU - Jeon, Soyoung
AU - Rutala, William A.
AU - Weber, David J.
AU - Sobsey, Mark D.
Y1 - 2010/05/01
From the abstract: Both viruses were inactivated more rapidly at 40°C than at 20°C.
Yes, the SARS-CoV2 can survive at a temperature of more than 30°C.
I just want to say no one anywhere is safe until the vaccine develope, as a researcher we must guide people to take precautionary measures and stay home.
Sure, the amino acid has a certain temperature to enable biological activities.
The Coronaviruses are sensitive to exposure to heat (56 °C for 30 min).
Source:
Article The genetic sequence, origin, and diagnosis of SARS-CoV-2
https://duux.com/en/the-effects-of-temperature-and-humidity-on-covid-19-corona-virus/
https://www.cdc.gov/coronavirus/2019-ncov/community/critical-workers/implementing-safety-practices.html
The coronavirus can survive at temperature more than 30 degree celsius but it is sensitive to high temperatures. It was seen that temperature greater than 60 degree celsius reduced its effectivity but it was still able to replicate. Experiments showed that heating the coronavirus at 92 degree celsius for 15 minutes completely deactivated the virus. As such high temperature deactivated the virus completely, such high temperature could also fragment the RNA of the virus, which carries the genetic code of the virus thus deactivating it.
Divya R.
Specifically, coronaviruses are thermolabile, which means that they are susceptible to normal cooking temperatures (70°C). Therefore, as a general rule, the consumption of raw or undercooked animal products should be avoided.
https://www.accuweather.com/en/health-wellness/higher-temperatures-affect-survival-of-new-coronavirus-pathologist-says/700800
The new study, which is not yet peer-reviewed and published by researchers in Beijing, China, suggests that for each degree in temperature increase and each percent humidity increase, the contagiousness of the disease caused by the coronavirus, named COVID-19, goes down.
https://www.cdc.gov/coronavirus/2019-ncov/community/critical-workers/implementing-safety-practices.html
"It indicates that the arrival of summer and rainy season in the Northern Hemisphere can effectively reduce the transmission of the COVID-19," the authors wrote.
https://www.businessinsider.com/coronavirus-cases-flu-like-drop-linked-with-high-heat-humidity-2020-3
There is growing evidence of correlation of SARS-CoV-2 to climate (T+RH+UV). Check my preprint for a global assessment of the effect of climate to virus. The hotter, more sunny it is , the less it propagates and the less deadly it is:
Preprint The climate divide of Covid-19
And this one too:
https://academic.oup.com/jid/advance-article/doi/10.1093/infdis/jiaa274/5841129
Saudi Arabia is currently like an oven with temperatures routinely in excess of 40 degrees Centigrade. The number of cases of COVID-19 is still increasing.
I believe most of the population live in air conditioning, and the hotter it is outside, the colder they tend make it inside. HVAC in particular, which recirculate the air sometime with poor filtering and low external inlet, could become a vehicle of spread. It would ne interesting to know WHERE is Saudi Arabia the spread is happening.
Divya R.
Yes, Coronavirus ( Novel SARS CoV-2) can easily survive above 30 degree C.
In north India there is hot and the pandemic is still going on. It is thermolabile at 70 degree C.
Open this: https://www.worldometers.info/coronavirus/ and scroll down to the list of countries.
Now click on the column "Tot cases / 1 Mpop ". India is at place 114.
Then click on "Deaths / 1Mpop" India is at 102.
The relative data is what really shows the penetration of the flue within the population, and the data about India show levels of cases and specially deaths that you find in a normal flue. What this tells you is that above 25°C, particularly with wet weather and sunlight, the virus survives but is weakened and loses its aggressive power, becoming ordinary flue.
According to the World Health Organization, heat at 56°C kills the SARS coronavirus at around 10000 units per 15 min (quick reduction). This clearly indicates that virus can survive above 30 degree centigrade.
I assume you are talking about Centigrade. The virus can survive freezing, that is how it is stored in the lab. On the other end, of course it can survive at 37 degrees Centigrade, the normal human body, otherwise we wouldn't have infections from it. The hypothalamus in humans increases the temperature in an attempt to kill the virus. But, beyond that there is an increasing viral kill rate above say 50 degrees Centigrade. A lot has to do, I think, with viral desiccation at higher temperatures, that usually will kill the virus. Also, where it is warm outside, it is usually sunny, and the virus is very sensitive to UV radiation. Thank you and stay safe, Gary Ordog, MD, July 18, 2020.
>Nazir A. Pala: Indeed, it survives above 50°, but apparently it is weakened. India has 16 deaths per million people, against the 600 of Spain, Italy etc. This compares to the death rate of an ordinary flue. Heath may be the reason.
It would be interesting to know where in India are transmissions higher, in slums or villages, where people live under the sun, in hot temperatures, or in high rise buildings, with air conditioning down at 15C?
Western Maharastra is still the biggest hot spot in India!!
But potential new hotspots are emerging as states in the south - Karnataka and Andhra Pradesh - and in the east - Bihar, West Bengal - record a rapid rise in daily case numbers. In some states max. temp is 40.5 to 45 degree C.
https://www.bbc.com/news/world-asia-india-53440913
30C? It is not true now. We can see even at 95-100F (>35C) Summer time in the Southern USA (Florida and Texas especially), the COVID-19 cases are still spiking. Florida is in risk of running out of ICU beds.
Florida, California, Texas, Panama, Singapore, Dubai, Mumbai etc. are all places where when it gets hot people live indoors, in high rise buildings, bars, restaurants, or shopping malls with dry air and T=18°C, and of course NO UV!! There is an evident relation between development and Covid transmission, particularly in hot areas. A study showing the transmission rates indoors and outdoors in those areas would be very welcome, but the data is difficult to gather.
There is dearth of evidence proving the plausibility of the hypothesis.
It obviously does in the human body, where even temperatures of 40°C cannot kill it. As for outside the body, it depends on environmental conditions. Heat alone won't be very effective, but if you add humidity and mostly UV light, it dies fast. According the NBACC, T>25°C + RH>20% + UVB/UVC and it's gone in 90 sec. in aerosol and 120sec. on non porous surfaces. This was announced by the DHS in that famous press conference that got Trump his Nobel in Medicine: https://youtu.be/3XqkU8yJOmc, but you'll find many studies on UV+T, like: https://academic.oup.com/jid/advance-article/doi/10.1093/infdis/jiaa274/5841129 or
Research Low level UVB Indoors can Decimate Covid-19
According to the NIH paper/book "Features, Evaluation, and Treatment of Coronavirus" https://www.ncbi.nlm.nih.gov/books/NBK554776/
last updated on October 4, 2020.
Currently, the inactivation temperature of SARS-CoV-2 must be well elucidated. It seems that this virus can be inactivated at about 27° C. On the contrary, it may resist the cold even below 0°C.
Furthermore, these viruses can be effectively inactivated by lipid solvents including ether (75%), ethanol, chlorine-containing disinfectant, peroxyacetic acid, and chloroform except for chlorhexidine.
Dear Divya R.,
Yes, already in March 2020, the results of virological tests appeared, which showed that the first varieties of the SARS-CoV-2 (Covid-19) coronavirus decay only at a temperature of about 60 degrees C.
Best wishes,
Dariusz Prokopowicz
correlation doesnot exist between the variations in temperatureand spread of coronavirus