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Hepatitis E is inflammation of the liver caused by infection with the hepatitis E virus (HEV); [4][5] it is a type of viral hepatitis. [6] Hepatitis E has mainly a fecal-oral transmission route that is similar to hepatitis A, although the viruses are unrelated. [7][8][9] HEV is a positive-sense, single-stranded, nonenveloped, RNA icosahedral ...
Mathematical models can project how infectious diseases progress to show the likely outcome of an epidemic (including in plants) and help inform public health and plant health interventions. Models use basic assumptions or collected statistics along with mathematics to find parameters for various infectious diseases and use those parameters to ...
Number needed to vaccinate. Number needed to vaccinate (NNV) is a metric used in the evaluation of vaccines, [1][2][3] and in the determination of vaccination policy. It is defined as the average number of patients that must be vaccinated to prevent one case of disease. It is a specific application of the number needed to treat metric (NNT).
Infectious diseases, gastroenterology. Viral hepatitis is liver inflammation due to a viral infection. [1][2] It may present in acute form as a recent infection with relatively rapid onset, or in chronic form, typically progressing from a long-lasting asymptomatic condition up to a decompensated hepatic disease and hepatocellular carcinoma (HCC).
Orthohepevirus A. The hepatitis E virus (HEV) is the causative agent of hepatitis E. It is of the species Orthohepevirus A.[a][2][1] Globally, approximately 939 million corresponding to 1 in 8 individuals have ever experienced HEV infection. About 15–110 million individuals have recent or ongoing HEV infection. [3]
Compartmental models are a very general modelling technique. They are often applied to the mathematical modelling of infectious diseases. The population is assigned to compartments with labels – for example, S, I, or R, (S usceptible, I nfectious, or R ecovered). People may progress between compartments. The order of the labels usually shows ...
Epidemic curve. An epidemic curve, also known as an epi curve or epidemiological curve, is a statistical chart used in epidemiology to visualise the onset of a disease outbreak. It can help with the identification of the mode of transmission of the disease. It can also show the disease's magnitude, whether cases are clustered or if there are ...
Number needed to treat. The number needed to treat (NNT) or number needed to treat for an additional beneficial outcome (NNTB) is an epidemiological measure used in communicating the effectiveness of a health-care intervention, typically a treatment with medication. The NNT is the average number of patients who need to be treated to prevent one ...