I was trying to picture this. They bring air INTO the room from a point of origin don't they? They don't take air OUT of the room and pass it on to the next room do they? But if there is a problem of the virus spreading this way, OK, but then that would only be floor by floor wouldn't it? In other words the hospital could occupy a floor and the vents wouldn't affect anything but what's on that floor, and locations could be chosen according to how bad the effect might be from the vents at any particular distance from the source. ... |
When the fans are off the air can drift in and out. The systems are not set up for continuous fan use. Even with the fans on there will be pressure differences between rooms that can cause air to be sucked into the vents and distributed to other rooms.
When I was in ICU at Dana Farber (2007) for an autogenic stem cell transplant, I was in a room with positive air pressure from dedicated sterilized air supply and the entrance to the room was like an air-lock. Obviously it is not feasible to convert a commercial ship to this standard.
Savage says he had studied epidemioilogy ... |
quote:
Epidemiology - Wikipedia Epidemiology is the study and analysis of the distribution (who, when, and where), patterns and determinants of health and disease conditions in defined populations.
It is a cornerstone of public health, and shapes policy decisions and evidence-based practice by identifying risk factors for disease and targets for preventive healthcare. Epidemiologists help with study design, collection, and statistical analysis of data, amend interpretation and dissemination of results (including peer review and occasional systematic review). Epidemiology has helped develop methodology used in clinical research, public health studies, and, to a lesser extent, basic research in the biological sciences.[1]
Major areas of epidemiological study include disease causation, transmission, outbreak investigation, disease surveillance, environmental epidemiology, forensic epidemiology, occupational epidemiology, screening, biomonitoring, and comparisons of treatment effects such as in clinical trials. Epidemiologists rely on other scientific disciplines like biology to better understand disease processes, statistics to make efficient use of the data and draw appropriate conclusions, social sciences to better understand proximate and distal causes, and engineering for exposure assessment.
The distinction between "epidemic" and "endemic" was first drawn by Hippocrates,[3] to distinguish between diseases that are "visited upon" a population (epidemic) from those that "reside within" a population (endemic).[4] The term "epidemiology" appears to have first been used to describe the study of epidemics in 1802 by the Spanish physician Villalba in Epidemiología Española.[4] Epidemiologists also study the interaction of diseases in a population, a condition known as a syndemic.
The term epidemiology is now widely applied to cover the description and causation of not only epidemic disease, but of disease in general, and even many non-disease, health-related conditions, such as high blood pressure, depression and obesity. Therefore, this epidemiology is based upon how the pattern of the disease causes change in the function of everyone.
Epidemiologists employ a range of study designs from the observational to experimental and generally categorized as descriptive, analytic (aiming to further examine known associations or hypothesized relationships), and experimental (a term often equated with clinical or community trials of treatments and other interventions). In observational studies, nature is allowed to "take its course," as epidemiologists observe from the sidelines. Conversely, in experimental studies, the epidemiologist is the one in control of all of the factors entering a certain case study.[38] Epidemiological studies are aimed, where possible, at revealing unbiased relationships between exposures such as alcohol or smoking, biological agents, stress, or chemicals to mortality or morbidity. The identification of causal relationships between these exposures and outcomes is an important aspect of epidemiology. Modern epidemiologists use informatics as a tool.
Observational studies have two components, descriptive and analytical. Descriptive observations pertain to the "who, what, where and when of health-related state occurrence". However, analytical observations deal more with the ‘how’ of a health-related event.[38] Experimental epidemiology contains three case types: randomized controlled trials (often used for new medicine or drug testing), field trials (conducted on those at a high risk of contracting a disease), and community trials (research on social originating diseases).[38]
The term 'epidemiologic triad' is used to describe the intersection of Host, Agent, and Environment in analyzing an outbreak.
There, now we have "studied epidemiology" ... we looked it up on the internet.
Curiously (or not) I'll trust an experience epidemiologist with experience working with epidemic diseases over some internet/radio host person who claims authority because he "studied epidemioilogy" ... such as people working for the CDC and who are fine with moving the passengers and crew to military base care.
These are not politicians or people with a political bias, Faith. Trust them.
Enjoy