Covid-19 Covid-19 kitajski super virus

Uporabnik Pbutec je napisal:

Danes novica, da virus preživi tudi do 28 dni na mizi. Rabimo torej aplikacijo, ki bo zaznala prisotnost virusa in ti bo javila, da si pred dnevi prijel za kljuko v kleti bloka, kjer je pred 4 tedni nekdo okužil kljuko.

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Uporabnik kalbo je napisal:

Ma to je spet medijski bulšit. Ve se, da je kontaktni prenos malo verjeten.

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Uporabnik SamSvoj je napisal:

Ker sem (precej) prepričan, da zgornjega ni gledal nihče; en poudarek:

Community and Close Contact Exposures Associated with COVID-19 ...

Community and close contact exposures continue to drive the coronavirus disease 2019 (COVID-19) pandemic. CDC and other public health authorities recommend community mitigation strategies ...

www.cdc.gov

in del tabele iz tega papirja, ki se tiče mask

Reported use of cloth face covering or mask 14 days before illness onset (missing = 2)​
Never​	6 (3.9)​	5 (3.1)​	0.86​
Rarely​	6 (3.9)​	6 (3.8)​
Sometimes​	11 (7.2)​	7 (4.4)​
Often​	22 (14.4)​	23 (14.5)​
Always​	108 (70.6)​	118 (74.2)​

Zanima me komentar tehle cifer. Dohtar, zobar, mogoče Kalbo (ko ti je to smiseln ukrep)? V oklepaju so procenti.

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In this investigation, participants with and without COVID-19 reported generally similar community exposures, with the exception of going to locations with on-site eating and drinking options. Adults with confirmed COVID-19 (case-patients) were approximately twice as likely as were control-participants to have reported dining at a restaurant in the 14 days before becoming ill. In addition to dining at a restaurant, case-patients were more likely to report going to a bar/coffee shop, but only when the analysis was restricted to participants without close contact with persons with known COVID-19 before illness onset. Reports of exposures in restaurants have been linked to air circulation (7). Direction, ventilation, and intensity of airflow might affect virus transmission, even if social distancing measures and mask use are implemented according to current guidance. Masks cannot be effectively worn while eating and drinking, whereas shopping and numerous other indoor activities do not preclude mask use.

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Uporabnik SamSvoj je napisal:

Ker sem (precej) prepričan, da zgornjega ni gledal nihče; en poudarek:

Community and Close Contact Exposures Associated with COVID-19 ...

Community and close contact exposures continue to drive the coronavirus disease 2019 (COVID-19) pandemic. CDC and other public health authorities recommend community mitigation strategies ...

www.cdc.gov

in del tabele iz tega papirja, ki se tiče mask

Reported use of cloth face covering or mask 14 days before illness onset (missing = 2)​
Never​	6 (3.9)​	5 (3.1)​	0.86​
Rarely​	6 (3.9)​	6 (3.8)​
Sometimes​	11 (7.2)​	7 (4.4)​
Often​	22 (14.4)​	23 (14.5)​
Always​	108 (70.6)​	118 (74.2)​

Zanima me komentar tehle cifer. Dohtar, zobar, mogoče Kalbo (ko ti je to smiseln ukrep)? V oklepaju so procenti.

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Uporabnik corsol je napisal:

... podatki pač kažejo, da cca 70 -85% obolelih uprablja masko 15-30% pa ne ali zelo redko.
Upam , da ne bo iz tega kdo zaključil , da če ne nosiš maske je manjša verjetnost okužbe.

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A cluster randomised trial of cloth masks compared with medical masks in healthcare workers - PMC

The aim of this study was to compare the efficacy of cloth masks to medical masks in hospital healthcare workers (HCWs). The null hypothesis is that there is no difference between medical masks and cloth masks. 14 secondary-level/tertiary-level ...

www.ncbi.nlm.nih.gov

• The use of cloth masks is widespread around the world, particularly in countries at high-risk for emerging infections, but there have been no efficacy studies to underpin their use.
• This study is large, a prospective randomised clinical trial (RCT) and the first RCT ever conducted of cloth masks.
• The use of cloth masks are not addressed in most guidelines for health care workers—this study provides data to update guidelines.
• The control arm was ‘standard practice’, which comprised mask use in a high proportion of participants. As such (without a no-mask control), the finding of a much higher rate of infection in the cloth mask arm could be interpreted as harm caused by cloth masks, efficacy of medical masks, or most likely a combination of both.

Figure 2

Uporabnik jekleni je napisal:

Maske ščitijo druge, ne tebe. Za nosilca bi potrebovali bistveno boljšo masko.
Številke torej govorijo, da bi 70'85% ljudi bistveno bolj širilo virus v svoji zgodnji fazi okužbe, kot so ga.

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Uporabnik mosseero je napisal:

Zakaj pa tegale ne omeniš, pa je bistvo študije?

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Uporabnik SamSvoj je napisal:

Sem sicer čakal Kalbota s temle, ampak nič zato; to je tisti mentalni salto mortale o katermsem govoril....

Torej, jaz kužen in nosim masko (tadobro, hudo medicinsko), ki preprečuje da moje pljuvanje ko govorim doseže tebe, nedolžnega in nič hudega slutečega in te s tem ščitim (pa tvojo babico, dedeka in podobne... )
Zdaj pa druga situacija; jaz nemarni, neodgovorni, zalega najhujše vrste kužen in brez maske pljuvam vse okoli sebe, ti pa nosiš super duper kvalitetno medicinsko masko (enako kot jaz v prejšnji situaciji, ko te je ščitila) in te NE ZAŠČITI pred istimi/enakimi kapjicami v luftu.

Najbrž sem jaz nor (dobro, nemaren pacek sem itak že), ker tega enostavno NE RAZUMEM....

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Uporabnik SamSvoj je napisal:

Pravzaprav je to (skoraj) zaključek tele študije

A cluster randomised trial of cloth masks compared with medical masks in healthcare workers - PMC

The aim of this study was to compare the efficacy of cloth masks to medical masks in hospital healthcare workers (HCWs). The null hypothesis is that there is no difference between medical masks and cloth masks. 14 secondary-level/tertiary-level ...

www.ncbi.nlm.nih.gov

Skoraj zato, ker je bila narejena v bonicah in kontrola v tej študiji pomeni obilajno prakso, kar (če sem prav razumel) v velikem številu pomeni nošenje mask tamin ko je to potrebno/priporočeno/predpisano (ostali čas v bolnicah pa pač ne).

.....
Results
The rates of all infection outcomes were highest in the cloth mask arm, with the rate of ILI statistically significantly higher in the cloth mask arm (relative risk (RR)=13.00, 95% CI 1.69 to 100.07) compared with the medical mask arm. Cloth masks also had significantly higher rates of ILI compared with the control arm. An analysis by mask use showed ILI (RR=6.64, 95% CI 1.45 to 28.65) and laboratory-confirmed virus (RR=1.72, 95% CI 1.01 to 2.94) were significantly higher in the cloth masks group compared with the medical masks group. Penetration of cloth masks by particles was almost 97% and medical masks 44%.
Conclusions
This study is the first RCT of cloth masks, and the results caution against the use of cloth masks. This is an important finding to inform occupational health and safety. Moisture retention, reuse of cloth masks and poor filtration may result in increased risk of infection. Further research is needed to inform the widespread use of cloth masks globally. However, as a precautionary measure, cloth masks should not be recommended for HCWs, particularly in high-risk situations, and guidelines need to be updated.

.....
Strengths and limitations of this study

• The use of cloth masks is widespread around the world, particularly in countries at high-risk for emerging infections, but there have been no efficacy studies to underpin their use.
• This study is large, a prospective randomised clinical trial (RCT) and the first RCT ever conducted of cloth masks.
• The use of cloth masks are not addressed in most guidelines for health care workers—this study provides data to update guidelines.
• The control arm was ‘standard practice’, which comprised mask use in a high proportion of participants. As such (without a no-mask control), the finding of a much higher rate of infection in the cloth mask arm could be interpreted as harm caused by cloth masks, efficacy of medical masks, or most likely a combination of both.

......


Figure 2
Outcomes in trial arms (CRI, clinical respiratory illness; ILI, influenza-like illness; Virus, laboratory-confirmed viruses).


Disklejmer: ne borim se proti nošinju mask; nima smisla, ker je to izgubljena bitka (sploh ob mentalnih preskokih, ki so zanimivi). samo povem naprej kar vidim...

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Uporabnik corsol je napisal:

Če ti "pluvaš" po meni me nobena maska ne zaščiti 100% , ker maske pač nimam čez oči.....

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Uporabnik SamSvoj je napisal:

Jah, naslednja stopnja bo obvezno nošenje zaščitnih očal.

Kam gre neumnost je že neverjetno. Pa to ni mišljeno osebno, samo čudim se še ...

Grem iskat še en zanimv članek, pol pa počivat; ne morem (no ne da se mi) več ...

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Uporabnik Matey je napisal:

Eno je, da ne znaš pojasnit oz. ne veš in nekaj drugega, da nočeš povedati.

Zdaj pa ali ljudje dejansko nočejo povedati kje so se okužili ali pa gre enostavno za šum v komunikaciji in/ali v razumevanju je pa spet druga stvar.

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Uporabnik bizi je napisal:

Ali bi ti priznal, da si se okužil pri ljubici, ki je po možnosti poročena?

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