@
Marcel317 @
Anoniem: 1350842 @
Sylistar
edit:
https://en.wikipedia.org/wiki/Influenza
Even doorscrollen tot case fatility rate (of zoiets, het is een tabel).
edit2
Statistisch verschil COV2 vs Influenza.(Scrollen voor plaatje)
https://www.businessinsid...3?international=true&r=US
Nogmaals, ik zit op m'n werk, dus het oogt allemaal wat kortaf. En ja, ik heb geen idee hoe en waarom wij overheidsinstanties op dit moment vertrouwen
(en zéker geen Nederlandse, want die hebben zélfs een deel van de adviezen van de WHO niet over genomen. Nou dan heb je het toch wel echt over "rente over rente") over SARS-COV-2. Dat neemt niet weg dat ik inderdaad wel vertrouw op de gegevens van de generieke griep, omdat die 100% gedocumenteerd is, over meerdere jaren is gevolgd en over de wereld door verschillende instanties individueel wordt uitgevoerd. Voor de griep zijn er vaccins en is het voorkomen ervan daarom vrij eenvoudig.
Ik hoop dat dit beantwoord waarom ik overheidsinstanties wel quote m.b.t. gegevens van influenza en niet wens te quoten op basis van COV2.
Met betrekking tot Airborne: (Wiki)
An airborne disease is any disease that is caused by pathogens that can be transmitted through the air by both small, dry particles, and as larger liquid droplets[1]. Such diseases include many of considerable importance both in human and veterinary medicine. The relevant pathogens may be viruses, bacteria, or fungi, and they may be spread through breathing, talking, coughing, sneezing, raising of dust, spraying of liquids, toilet flushing or any activities which generates aerosol particles or droplets.
https://www.cdc.gov/infec...solation-guidelines-H.pdf
I.B.3.c. Airborne transmission.For certain other respiratory infectious agents, such as influenza130, 131 and rhinovirus104,
and even some gastrointestinal viruses (e.g., norovirus132 and rotavirus133 ) there is
some evidence that the pathogen may be transmitted via small-particle aerosols, under
natural and experimental conditions. Such transmission has occurred over distances
longer than 3 feet but within a defined airspace (e.g., patient room), suggesting that it is
unlikely that these agents remain viable on air currents that travel long distances.
Met betrekking tot Aerosol:
https://en.wikipedia.org/wiki/Aerosol
Hieronder slechts een graai uit wat artikelen met betrekking tot wel of niet Aerosol. Ten eerste;
Aerosol: 100% JA
Ten tweede; Aerosol is nog steeds een ruim begrip. In de paniek denkt men wellicht aan kilometers verspreiding op basis van één ademhaling, maar dat is lariekoek. Het probleem zal zich voornamelijk voordoen bij het hoesten, omdat er daarbij vrij veel druk op staat en in dat geval het virus zich enkele meters kan verspreiden.
Maar dat maakt de verspreiding van het virus wél veel makkelijker in o.a. grote menigtes, of binnenhuis.
Dit leidt ook tot die R0 van 2.3+
Daar moet bij worden gezegd, dat een R0 geen statisch getal is. Als iedereen in Nederland in quarantaine zou gaan en effectief niemand kan aansteken, dan neemt de R0 af en zal zelfs beneden 1 komen (afname groei). Dit is de reden dat China zo in heeft gegrepen en wellicht waarom de acties van de Zuid Koreaanse overheid zo succesvol zijn, met een zeer laag sterftecijfer als gevolg. Uiteraard zal dit slechts een component zijn.
Begin Februari:
http://www.cidrap.umn.edu...atory-protection-covid-19Donald Milton, MD, a professor of environmental health at the University of Maryland, helped prove via the use of his Gesundheit machine that influenza could be spread via aerosol transmission. He said he is in contact with colleagues in Singapore who are attempting to study the transmission of the COVID-19 viruses, which are often called nCoV, for novel coronavirus.
Though Chinese officials said earlier this week that they believe the coronavirus is transmitted only via droplets, implying they do not believe airborne or contact transmission plays a role, Milton said that statement is likely rooted in fear, not science.
"To me this sounds like someone trying to deal with panic, because people panic when they hear airborne transmission and long-distance transmission," he said. He said there has been scientific evidence of aerosol transmission of MERS-CoV (Middle East respiratory syndrome coronavirus), so it is likely possible for this novel coronavirus, as well.
Milton cautions that the difference between aerosol and droplet transmission is largely in name only. Respiratory droplets, emitted with a sneeze or a cough, are commonly thought to land within 6 feet of patients and are too large to be buoyant on air currents. Respiratory aerosols are droplets too, Milton said, but smaller and light enough to travel farther.
"You cannot tell the difference epidemiologically between something aerosol transmitted by weak sources and large droplet spray," said Milton. "They behave so similar, it's very hard to pick up the difference."
He said he suspects the capability of long-distance transmission with COVID-19 will be connected to source strength, or how symptomatic a person is.
Februari 25:
https://www.youtube.com/watch?v=xWj9OUAfTLQ“마스크 착용하면 괜찮다”...비말보다 강력한 ‘에어로졸 전파’ 팩트체크
Earlier this month, China admitted that aerosol transmission of COVID-19 is possible.
Does that mean the virus spreads through the air?
To shed light on what you need to know and be prepared against, here's our Lee Kyung-eun.
Aerosols are tiny particles suspended in the air.
They can be either solid or liquid and are generated when people cough or sneeze.
They are typically larger than 0.5 micrometers, but much smaller than droplets.
On February 19th, China's National Health Commission admitted that the novel coronavirus can be transmitted through aerosols.
It is a major shift from its previous stance that the virus is contracted through droplets and close contact.
So, here comes the most fundamental question: are aerosols more dangerous than droplets?
Yes.
Aerosols can transmit the disease more easily because they are lighter and smaller than droplets, so are capable of staying in the air for longer.
Then, can we get infected just by breathing next to a patient?
The answer is no.
Experts say that aerosol infection is different from airborne infection,... in which the virus floats in the air like tuberculosis.
They say aerosol infection rather only happens in certain conditions.
"It is prone to occur in hospital during medical procedures like inserting a tube into the respiratory system, which causes a burst of mass aerosols. That's why the medical staff there wear personal protective equipment."
So, the possibility of aerosol infection in our everyday lives is extremely low, but it could still happen when a patient sneezes really hard or when you are exposed to high concentrations of aerosol in an enclosed environment for a long period of time.
Then in those situations, can we still prevent aerosol infection?
Experts say wearing a mask can effectively prevent aerosol infection as well as blocking droplet infection.
"Any mask you wear to prevent coronavirus is capable of blocking aerosols."
The coronavirus may spread more easily than previously believed, but experts say droplet infection is still the main route of transmission.
Lee Kyung-eun, Arirang News.
Met betrekking tot A-Symptoom (Zelfs de WHO geeft toe dat dit waar is, na 20 dagen doen alsof het niet waar was:
https://www.who.int/docs/...-19.pdf?sfvrsn=96b04adf_2Further, transmission in the first 3-5 days of illness, or potentially pre-symptomatic transmission –transmission of the
virus before the appearance of symptoms – is a major driver of transmission for influenza. In contrast, while we are
learning that there are people who can shed COVID-19 virus 24-48 hours prior to symptom onset, at present, this
does not appear to be a major driver of transmission.
Dat neemt niet weg dat de WHO een economisch belang moet afwegen tegen paniek en daarom kiest voor de makkelijke weg.
Begin februari waren er al rapporten die deden vermoeden dat tijdens de incubatieperiode het virus al werd overgedragen:
https://www.nejm.org/doi/full/10.1056/NEJMc2001468This case of 2019-nCoV infection was diagnosed in Germany and transmitted outside Asia. However, it is notable that the infection appears to have been transmitted during the incubation period of the index patient, in whom the illness was brief and nonspecific.3
[Reactie gewijzigd door Oyxl op 11 maart 2020 13:27]