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The linear no-threshold model (LNT) is a dose-response model used in radiation protection to estimate stochastic health effects such as radiation-induced cancer, genetic mutations and teratogenic effects on the human body due to exposure to ionizing radiation. The model assumes a linear relationship between dose and health effects, even for ...
Alternative assumptions for the extrapolation of the cancer risk vs. radiation dose to low-dose levels, given a known risk at a high dose: supra-linearity (A), linear (B), linear-quadratic (C) and hormesis (D). The linear dose-response model suggests that any increase in dose, no matter how small, results in an incremental increase in risk.
During the onset of a growing pandemic, local communities cannot rely upon widespread availability of antiviral drugs and vaccines [6] [9] (See Influenza research).The goal of the index is to provide guidance as to what measures various organizations can enact that will slow down the progression of a pandemic, easing the burden of stress upon community resources while definite solutions, like ...
In a prediction rule study, investigators identify a consecutive group of patients who are suspected of having a specific disease or outcome. The investigators then obtain a standard set of clinical observations on each patient and a test or clinical follow-up to define the true state of the patient.
The viridans streptococci are a large group of commensal streptococcal Gram-positive bacteria species that are α-hemolytic, producing a green coloration on blood agar plates (hence the name "viridans", from Latin "vĭrĭdis", green), although some species in this group are actually γ-hemolytic, meaning they produce no change on blood agar. [1]
The study, published in the Lancet's eClinicalMedicine journal on Thursday, explored more than 100 million medical records of U.S. patients to see if Ozempic increased the risk of several ...
NCIRD supports and supervises state and local agencies working on immunization activities and commercial contracting for vaccine supply and distribution. NCIRD supports a national framework for surveillance of diseases for which immunizing agents are increasingly becoming available from commercial pharmaceutical companies, and assists health departments in developing vaccine information ...
The CDC also works on non-communicable diseases, including chronic diseases caused by obesity, physical inactivity and tobacco-use. [80] The work of the Division for Cancer Prevention and Control, led from 2010 by Lisa C. Richardson, is also within this remit. [81] [82]