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Profesor la Universitatea Bucuresti, despre studiul privind impactul SARS-CoV-2 asupra painii ambalate: "Aceste produse sunt complet sigure. Nu transmit virusul"

de Sinziana Verestiuc
Sambata, 26 Septembrie 2020, ora 00:01

   

Profesor la Universitatea Bucuresti, despre studiul privind impactul SARS-CoV-2 asupra painii ambalate: "Aceste produse sunt complet sigure. Nu transmit virusul"
Un studiu realizat de cercetatorii din cadrul Universitatii Bucuresti, Institutul de Virusologie "Stefan S. Nicolau" si Institutul National de Boli Infectioase "Matei Bals" arata ca virusul SARS-CoV-2 ramane ore bune detectabil pe painea neambalata. In schimb, painea ambalata este total protejata in fata noului coronavirus. Cercetatorii au prezentat pe larg studiul vineri, 25 septembrie, in cadrul unei conferinte de presa.

Prof. univ. dr. ing. Eden Mamut, din cadrul Universitatii Bucuresti, impreuna cu prof. univ. dr. fiz. Ioan Stamatin, directorul Centrului 3NanoSAE, spun ca s-au gandit, inca din luna martie, de cand s-a instaurat starea de urgenta in Romania, cum ar putea fi abordat acest studiu si din ce perspectiva.

"In universitati, pentru noi a existat o problema foarte practica. Ce se intampla atunci cand vrem sa redeschidem scoala catre studenti? In salile de curs, in laboratoare, cum anume am putea sa garantam securitatea lor? Ne-am lovit de o prima bariera, si anume faptul ca, in ceea ce priveste sistemele de dezinfectie, tot ceea ce inseamna, sa spunem, culturile de bacterii care se afla in aer, avem o bariera, deci nu am gasit nicio posibilitate de a testa. Atunci, a trebuit sa redirectionam aceasta testare catre suprafete", a declarat, in cadrul conferintei, prof. univ. dr. ing. Eden Mamut.

Ziare.com a discutat cu prof. univ. dr. ing. Eden Mamut, unul dintre expertii care au participat la realizarea studiului:

Foto: Prof. univ. dr. ing. Mamut Eden

Ziare.com: Cat timp a durat acest studiu?
Profesorul Eden Mamut: Studiul a inceput in luna iulie, au fost cateva aspecte de pregatire, preliminare, ulterior au fost pregatite toate aceste tipuri de probe si, din luna august, au inceput sa fie prelevate probele si realizate testele. In prezent, suntem la prima faza de testare.

Ziare.com: Ce ati urmarit prin acest studiu?
Profesorul Eden Mamut: Ideea studiului a fost, in primul rand ca, pentru tipurile de produse foarte generale, - cum sunt produsele de panificatie-, care ar putea sa fie impactul acestui virus daca acestea ar fi neambalate si ar intra in contact direct cu saliva sau cu alte modalitati de transmitere a virusului si, situatia in care produsele respective ar fi ambalate? Deci, in felul acesta, s-a putut demonstra foarte clar ca, in cazul unor ambalaje nedeteriorate, aceste produse de panificatie sunt complet sigure, deci, nu transmit virusul respectiv.

Ziare.com: Care au fost pasii pe care i-ati urmat in acest studiu?

Profesorul Eden Mamut: Pasii au fost, pe de-o parte, identificarea unui numar de subiecti care au fost contaminati si testati pozitiv cu acest virus. Acest lucru s-a realizat la Institutul de Boli Infectioase "Matei Bals", de unde au fost prelevate probele respective de exudat. Mai departe, probele de exudat au fost conditionate in diverse culturi si s-au realizat solutii care sa fie verificabile si sa se constate care este incarcatura lor si care este gradul de infectiozitate al solutiilor respective.

De partea cealalta, la Universitatea din Bucuresti s-au realizat testele in ceea ce priveste materialele de ambalare, - vorbim despre foliile de polietilena care sunt curent folosite in ambalarea produselor de panificatie-, si s-a identificat daca acestea prezinta porozitati, care sunt aspectele legate de caracteristicile superficiale, tensiune superficiala si toate aspectele acestea.

Ulterior, s-au efectuat testele la Institutul de Virusologie al Academiei Romane, unde, pe de o parte, au fost preluate probele de solutii virale si, de partea cealalta, probele de polietilena si produsele de panificatie, care au fost testate prin inoculare, incubare printr-o anumita perioada si apoi testarea: daca exista persistenta virusului pe suprafata contaminata, pe celalalta fata a foliei contaminate si la interfata dintre folie si paine.

Obiectivul studiului realizat de Universitatea Bucuresti

Conform specialistilor, obiectivul studiului a fost: testarea virusilor si investigarea topografiei suprafetelor de ambalaj. Astfel, cercetatorii au descoperit ca virusul SARS-CoV-2 este unul dintre virusii care au o variabilitate in functie de cantitatea de informatie pe care o contine, iar dimensiunea acestuia variaza intre 40 si 140 de nanometri.

Cat rezista SARS-CoV-2 pe diferite suprafete
Acelasi studiu mai arata ca, pe exteriorul mastii chirurgicale, noul coronavirus poate rezista pe suprafata pana la sapte zile, dar nu tranziteaza prin masca. Pe bani sau pe hartie, virusul se poate mentine pana la patru zile, dar in functie de o anumita temperatura si de un anume grad de umiditate. Si pe sticla rezista tot patru zile, mai arata cercetarea amintita.

Pe suprafetele de plastic s-a sesizat ca virusul rezista pana la 72 de ore, in timp ce pe suprafetele de inox, tesatura sau lemn, doar 48 de ore. In schimb, pe ambalajele de carton virusul se poate mentine timp de 24 de ore. Pe cupru, patru ore, iar pe hartie igienica, in functie de temperatura si umiditate, poate rezista trei ore.

Cercetatorii din cadrul Universitatii Bucuresti arata ca rezultatele studiului ar putea fi de folos in gasirea unor solutii privind siguranta alimentara, avand in vedere epidemia provocata de noul coronavirus.

Acest studiu este rezultatul colaborarii intre cercetatori de la trei insitutii de cercetare: Universitatea din Bucuresti, Institutul de Virusologie "Stefan S. Nicolau" si Institutul de Boli Infectioase "Prof. Matei Bals".

Colectivul de cercetare a fost coordonat de prof. univ. dr. fiz. Ioan Stamatin, directorul Centrului 3NanoSAE, si reuneste specialisti de la Universitatea din Bucuresti (CS I Cornelia Nichita, prof. univ. dr. ing. Eden Mamut, Dr. Andreea Balan, suport si asistenta Dr. Carmen Chifiriuc), de la Institutul de Virusologie "Stefan S. Nicolau" (CS I Carmen Diaconu si CS I Coralia Bleotu) si de la Institutul National de Boli Infectioase "Prof. dr. Matei Bals" (Dr. Liliana Preotescu).

Citeste si:

VIDEO Painea neambalata ramane contaminta dupa contactul cu SARS-CoV-2. Ambalati painea - recomanda studiul facut de Universitatea Bucuresti
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https://www.fashionamuse.com/story-518/

 

Sfaturi cum sa convetuim cu corona virus

HEALTH---Expert-Recommended---35 Places You're Most Likely to Catch COVID--- Before you step out, read this essential ranking. BY KELLY HERNANDEZ---SEPTEMBER 5, 2020--- All peoples suppose vear masks,respect social distancing and often wash their hands. Threat levels are provided on a scale of 1 to 10, with one being the safest and 10 being the riskiest. These levels are estimated using CDC guidelines and the Texas Medical Association's risk rankings. Read on, and to ensure your health and the health of others, don't miss these Sure Signs You've Already Had Coronavirus. 1) Going to a State Park---Threat Level: 2 With wide open spaces and outdoor recreation areas, a state park may seem to be one of the safest places to visit during a pandemic. However, there are spots to watch out for as you explore your local state park. Restrooms, visitor centers, or popular attractions may be crowded, making it hard to socially distance.--- "Check with the park or recreation area in advance to prepare safely, use social distancing and avoid crowded parks, wear a mask, and clean hands often," the CDC suggests. Consider visiting the state park at off-times and heading to attractions that aren't as popular. 2) Getting Gas---Threat Level: 2 As long as you don't choose a crowded gas station that prevents social distancing, you should be relatively safe pumping gas. However, it's important to consider all the hands that have touched the pump and buttons before you. "Use disinfecting wipes on handles and buttons before you touch them," the CDC recommends. When you're done pumping, use hand sanitizer and don't touch your face until you can thoroughly wash your hands to lower your risk.—to be continued---

 

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3) Browsing at the Grocery Store---Threat Level: 3 Most grocery stores have strict guidelines in place that require mask wearing and social distancing. However, if someone isn't following the rules or the store is more crowded than usual, you may find yourself at risk for contracting the virus. The more time you spend extremely close to people who may be infected and are talking, coughing, or laughing, the higher your risk for contracting the virus. "Going to a market briefly, for five minutes or a transient encounter while you walk or run past someone, those are low risks," according to Dr. Muge Cevik, MD, MSc, MRCP(UK) from the University of St. Andrews. When visiting a grocery store, grab what you need and head out so you don't spend additional risky time in a crowd. 4) Taking a Walk---Threat Level: 3 A nice walk outside is a great way to clear your head during this stressful pandemic. But it's still important to follow social distancing and mask guidelines in your area to prevent the spread. A study published in Physics of Fluids analyzed respiratory droplets from sneezes and coughs. The study found that a human cough can expel droplets from 10 to 250 meters per second. If you're planning to take a relaxing walk, try to choose a path that's not very crowded and always practice social distancing. 5) Hiking---Threat Level: 4 When you head out to the great outdoors for a hike, you may assume you're safe from COVID-19. But if you're hiking on a crowded trail, you're still at risk. Wearing a face mask and staying six feet away from other hikers reduces your risk. "When you venture outdoors, try to only spend time with people within your household," warns the American Hiking Society. If you follow proper protocol, your risk remains low but it's important to follow your local government's regulations. —to be continued---

 

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6) Staying at a Hotel--Threat Level: 4 Before you plan a vacation, it's important to learn more about your destination and how it's faring through the COVID-19 pandemic. If you travel to an area with a high transmission rate, you're putting yourself at higher risk for contracting the virus than if you stay in your hometown. If you do plan to travel and stay in a hotel, check with the front desk about sanitizing procedures. "When I came in, I would also wipe things down, possibly with alcohol wipes — particularly high-touch surfaces that would have me touch something, then touch my mouth, like a hotel bathroom sink," says Mercedes Carnethon, Ph.D. from Northwestern University Feinberg School of Medicine. 7) Taking Your Kids to a Playground---Threat Level: 4 The amount of risk you take on when visiting a local playground with your children depends on where you live and how crowded the park may be. "Avoid crowded parks, wear a mask as feasible, and stay home if you are sick," is the advice provided by the CDC in regards to visiting playgrounds and local parks.
RELATED: COVID Mistakes You Should Never Make 8) Attending a Farmer's Market---Threat Level: 4 If your local farmer's markets are open for business, you may assume it's safe since these events are usually hosted outdoors. However, your risk for spreading COVID-19 at a farmer's market is only low if your local government enforces the proper protocol for vendors. For example, at farmer's markets in Washington,"businesses will not be able to serve customers or visitors---to be continued---

 

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(4) 9) Walking Through Downtown---Threat Level: 4 No matter where you live, downtown areas are usually synonymous with crowded sidewalks and bustling businesses. These populated areas can make it hard to socially distance. While most areas implement face mask wearing guidelines when it's hard to socially distance, not all patrons follow these regulations.--- If you plan to visit your local downtown area, wear a mask and attempt to social distance as much as possible. Try to visit the area at a time that's less crowded, such as a weekday afternoon. 10) Going to an Art Museum----Threat Level: 4 In many areas, art, history, and science museums are experiencing a phased reopening. The guidelines they're required to follow may vary by location but most include mask mandates and social distancing. Some museums may use a reservation system to ensure they can follow these regulations. For example, New York museums are allowed "25% of maximum occupancy, inclusive of patrons/visitors, who must only be permitted entry into the institution if they wear an acceptable face covering," according to the Museum Association of New York. If you're worried about the COVID-19 risk associated with visiting an art museum, review the establishment's guidelines first to ensure you feel safe and can enjoy your time. 11) Waiting in a Doctor's Office---Threat Level: 4 Most doctor's offices are still encouraging virtual appointments but there may be some instances when you need to see your doctor face-to-face. Your doctor's office is likely to be implementing strict regulations, including wearing a mask and socially distancing from other patients. For example, John Hopkins Medicine claims it has "carefully planned and taken extra precautions to help ensure that we are doing everything we can to minimize any risk to our patients and staff members." They're focused on keeping facilities clean and testing staff for COVID-19 regularly. While being in a waiting room with potentially sick people is risky, you shouldn't avoid the doctor if you need medical treatment. —to be continued---

 

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(5) 12) Visiting a Library---Threat Level: 4 While some libraries may be opening their doors to the public, there are other ways to borrow books or use library services without visiting the establishment. To minimize risk, visit your local library's social media accounts or websites to browse the online services offered. Libraries are prepared to see a "potential increase in that online traffic and the interest in some of these online support services," according to Catherine Rasberry, Ph.D. from the CDC's Division of Adolescent and School Health. You may be able to choose your books online and pick them up curbside, which reduces your human-to-human contact and your risk for potentially contracting the virus. 13) An Indoor Baby or Bridal Shower---Threat Level: 5 You never want to miss a family member or good friend's baby or bridal shower but this indoor event may come with a high risk of spreading coronavirus. You're 19 times more likely to catch COVID-19 from someone when hanging out at an indoor event as opposed to outdoors, according to a study that analyzed virus transmission in Japan. This may be because infected respiratory droplets can't disperse as easily indoors. 14) Shopping in a Retail Store---Threat Level: 5 Packed retail stores are a thing of the past and more shoppers simply don't "browse" anymore for fear of increasing their risk of contracting the virus. When you shop in a retail store, it's best to grab what you need efficiently to reduce potential exposure. Retailers know the importance of safety and efficiency. A study from Ipsos found that "61% of consumers are still delaying brick-and-mortar retail for fear of getting sick." The survey also found that 62% of consumers are taking their health seriously and will switch retailers if they feel a store isn't taking the proper safety precautions, such as mask mandates and social distancing. Be picky about where you shop and be quick when picking up your goods to reduce your risk. —to be continued---

 

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(6) 15) Hosting a Cook-Out---Threat Level: 5 If you plan to host an outdoor cook-out with only a few friends who you know haven't been exposed to COVID-19, your risk remains low. However, keep in mind, the more attendees you invite to your cook-out, the higher your risk for spreading the virus. Opting to keep everyone inside without social distancing also increases your risk. Before planning a get-together at your house, you should review your local and state COVID-19 guidelines, consider your risk for severe illness, and consider your household members' risk for severe illness, the CDC suggests. Everyone should also stand six feet from one another.
RELATED: Everything Dr. Fauci Has Said About Coronavirus 16 Working in an Office---Threat Level: 6 If you've returned to work in an office environment, it may be nice to see your co-workers in person and not over video chat. But it's still important to be careful about spreading COVID-19. If you share office equipment or chat with co-workers who aren't wearing masks and one of them has COVID-19, it could easily spread to you and throughout the whole office. The Occupational Safety and Health Administration (OSHA) published "Guidance on Preparing Workplaces for COVID-19" to help businesses reopen safely. The organization urges employers to develop strict employee interaction guidelines, emergency response plans, and policies that isolate sick workers to help stop the spread. 17) Going Swimming---Threat Level: 6 "There is no evidence that COVID-19 can spread to people through the water used in pools, hot tubs, or water playgrounds," according to the CDC. While you don't need to worry about the water at a public pool, a crowded pool deck may be an issue. ---to be continued---

 

continuare (7) ultima pt.azi continui maine

(7) If you're finding it hard to socially distance while swimming or hanging out on the deck, you're putting yourself at risk for infection. Consider a pool that's less crowded or enforces social distancing restrictions more firmly or skip swimming altogether. 18) Going to School---Threat Level: 6 or higher Many schools are opening across the country, leaving parents to decide whether they feel safe sending their children back to the classroom. There are many new procedures in place, including mask mandates and social distancing guidelines. "While current evidence suggests that the risk of severe disease for children is lower overall than for adults, special precautions can be taken to minimize the risk of infection among children, and the benefits of returning to school should also be considered," according to the World Health Organization (WHO). 19) Going on a Trip With Friends---Threat Level: 6 At this point, everyone is getting antsy for a sense of normalcy. If your normalcy involves a fun end-of-summer trip with friends, it may seem safe enough to book a weekend beach getaway by now. But even if your friends are feeling fine, you could be putting yourself at risk. As much as 40% of people infected with COVID-19 are asymptomatic and have no idea they're carrying the virus, according to the CDC. If you spend a long weekend in close quarters with a friend who's asymptomatic, chances are you'll contract coronavirus, along with your other friends. 20) Dinner at a Friend's House Inside---Threat Level: 6 or higher It's easy to assume that hanging out with a small group of friends at someone's house is safe. However, the two most important elements to stop the transmission of COVID-19 are mask wearing and social distancing, according to the CDC. If you're at a friend's house with someone who's infected, you're in a dangerous spot.---to be continued---

 

Continui maine

Maine continui
I-mi este mai greu sa postez direct in romana din engleza!
Unele's demne de respectat altele mai putin.
Dar toate's instructive...ca si cultura medicala folositoare

 

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trebuie sa fim foarte atentzi .. un studiu recent al OMS a descoperit ca virusul se transmite si prin ba$$ini ...

purtarea pempersului in spatii publice va deveni obligatorie

 

Prostii

E o manipulare,la latrina 3 am vazut prima data chestia asta. Probabil pentru ca varanu' are afacerea cu paine ambalata... Savoria parca ii spune

 

Marele profesor, doctor, academician de valoare mondiala, etc,

NU ZICE nimic daca virusul, care rezista 3 zile pe polietilena, iar ambalajul painii este din aceasta, cum nu iei virus cand pui mana pe punga (virusata) si scoti sa mananci painea (nevirusata)?!
Ori o scoti cu brate robotice, ori te infectezi.
Exemplu de studiu *** facut de oameni platiti cu foarte multi bani, din fonduri publice, care mai si "fac" teste la Institutul ... de la Academie!...

 

Puneti litera "P" adica publicitate Vel Pitar, articol republicat!

Maretul prof, dr, acad, etc, etc, etc ne indeamna sa apucam punga de paine pe partea interioara, unde nu pot ajunge virusii!...
Adica, sa ne teleportam in punga cu paine, sa ne umflam ca Hulk, s-o intoarcem pe dos si sa avem parte de paine nevirusata?!
Asta-i exemplu de i.diot cu grade universitare, sau e un simplu mercenar al Vel Pitar, sau Dom' "profesor" Voiculescu Turnatoru???

 

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