Covid, how long does the Omicron variant really survive out of the body? – RB

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Covid, how long does the Omicron variant really survive out of the body? – RB

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Covid, how long does the Omicron variant really survive out of the body? – RB

Covid, how long does the Omicron variant really survive out of the body? – RB We have explained the details of the news, step by step, below. Covid, how long does the Omicron variant really survive out of the body? – RB Keep reading our news. Here are all the details on the subject.

Covid, how long does the Omicron variant really survive out of the body? – RB

Disinfecting well surfaces and thorough hand washing have long been the main anti Covid , followed in particular during the first wave, with the rush to purchase products to sanitize environments and alcohol-based disinfectants . Products that in full pandemic began to boast virucidal properties on the label. The indication has begun to be followed less and less over time, with several studies showing that the infection occurs mainly by air, and only with close contacts, mainly in indoor places. But that could all change with new research conducted by experts from Kyoto Prefectural University of Medicine .

Japanese scientists analyzed the survival of the original Sars-Cov-2 strain, that of Wuhan, and of those that have been cataloged as variants of concern , or Voc , i.e. the variants that arouse the most concern, therefore Alpha, Beta, Delta and Omicron.

The research conducted on stability environmental of the various strains has tried to understand how they behave in contact with plastic and skin, and therefore if there is the possibility of contagion through the surfaces. The assumption is that a longer survival period in environments and on people could be at the basis of the greater transmissibility of the mutated virus, or at least contribute to increasing it together with other factors, such as an increase in viral load, a change in the sites of infection. and a different way of dispersal of the pathogen.

Covid, how long does the Omicron variant last on surfaces and on the skin: the study on bioRxiv

The environmental stability of Sars-Cov-2 was first of all compared with that of other viruses, such as Sars-Cov-1, responsible for the Sars , and that of influence . Subsequently the research has elaborated the comparison with and between the various variants, overcoming previous studies that had quantified only the environmental stability of Alpha and Beta.

The study has still to be subjected to the peer review , the peer review, necessary to validate it all within the scientific community and consider it reliable, but it can be consulted on the database of bioRxiv . But it shows interesting results that could change our habits, and underline, once again, the importance of washing hands and disinfecting surfaces with specific products with virucidal action.

Covid, how many hours does the coronavirus survive on plastic surfaces and on the skin

The survival of the coronavirus variants was calculated by applying a viral solution to the surface of petri dishes, used for laboratory cultures, and to human skin models. Each plate was incubated in a controlled environment, at 25 ° C with relative humidity between the 45% and the 55%. Samples were then collected at different intervals to detect any traces of the virus. Survival time was defined as the range in which Sars-Cov-2 and its variants were still detectable. Three different experiments have been conducted in this sense.

The analyzes showed that the various variants survive on the plastic for the following time periods.

Original Wuhan stock: 56 hours. Alpha variant: 191, 3 hours. Beta variant: 156, 6 hours. Variant Range: 59,3 hours. Delta variant: 114 hours. Omicron variant: 193, 5 hours. On skin human , however, the data were as follows.

Original Wuhan stock: 8.6 hours. Alpha variant: 19, 6 hours. Beta variant: 19, 1 hour. Gamma Variant: 11 hours. Delta variant: 16,8 hours. Omicron variant: 21, 1 hours.

Covid, how traces of the coronavirus on surfaces and skin are eliminated

Scientists have also sought to understand how solutions of alcohol, and to be more precise ethanol, are effective in killing the virus that is in contact with plastic surfaces. They discovered with which formula the various variants were deactivated, and therefore rendered harmless, after 15 seconds .

For the Wuhan strain and the Gamma variant, alcoholic solutions are sufficient 32, 5% . For the Alfa, Beta and Delta variants alcoholic solutions are required 35% . For the Omicron variant alcoholic solutions are required 40% . The last variant, in chronological order, has therefore proved to be much more resistant to ethanol. The evaluations on the skin have instead shown the effectiveness of the solutions to 35% in deactivating all forms of the pathogen after 15 seconds.

The researchers therefore concluded that on the plastic and on the skin the variants Alpha, Beta, Delta and Omicron survive more than double of time compared to the original strain that emerged in Wuhan. And that could be infectious for more than 16 hours. Their high environmental stability may have increased the risk of contact transmissions and contributed to the exponential spread of new mutated viruses.

Covid, what emerged from the study on the duration of the coronavirus in ‘environment

How should we interpret this data? The researchers explain this to us in the final chapter of the pre-published research on the bioRxiv database, first of all highlighting the weaknesses of the study, conducted in controlled environments and not subject to other external factors. Virus survival is likely to be different “in nature”.

Furthermore, it must be emphasized that there are not enough data to explain the relationship between the presence of viruses on surfaces and on the skin and the actual infection, and it is not clear if and in what quantity the coronavirus is capable of infecting in this way. However, studying the survival of the coronavirus and its most worrying variants in the environment can provide new ones indicators to keep the Covid pandemic under control, monitor it and better understand how Sars-Cov-2 spreads and infects people, especially in the face of waves and mutations that always seem more resistant .

We know today that the Omicron variant, which represents the greatest cause for concern for the scientific community in this pandemic, as it has rapidly spread to positive patients around the world. We also hypothesize that the target of the infection is no longer the lower respiratory tract , but those high , and that for this reason the symptoms are no longer affecting the lungs, but appear more like a cold. The mutations present would also make Omicron more resistant to antibodies .

Knowing the hypothetical time in which the virus manages to survive on surfaces reminds us to keep our attention always high, disinfecting the hands on any occasion with alcohol-based solutions at 35% and clean constantly the surfaces . Advice aimed in particular at those who own a commercial activity or are responsible for the sanitization of particularly frequented places. These are simple actions, perhaps not necessary, but which certainly do not hurt, and could help limit possible infections due to contact with the virus responsible for Covid. And maybe make it disappear forever.

Science is making continuous progress, with many research laboratories that are focusing exclusively on better understanding the dynamics of the Covid infection in this period. From the latest studies it has emerged, as I report here, that the deaths of Covid would be up to 4 times more than those declared. The link between the spread of coronavirus and smog has also been demonstrated, as explained here. We have talked here about the alarm concerning children and what to do about the vaccine for the little ones.

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