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Acute Marek's disease is an epidemic in a previously uninfected or unvaccinated flock, causing depression, paralysis, and death in a large number of birds (up to 80%). The age of onset is much earlier than the classic form; birds are four to eight weeks old when affected.
Chickens, turkeys, and quail serve as natural hosts. There are six species in this genus. Diseases associated with this genus include: Marek's disease, which causes asymmetric paralysis of one or more limbs, neurological symptoms, and development of multiple lymphomas that manifest as solid tumors.
József Marek ([ˈjoːʒɛf ˈmɒrɛk]; March 18, 1868 – September 2, 1952) was a Hungarian veterinarian and scientist. Marek is best known for his discovery of the poultry disease that would eventually bear his name, Marek's disease. In his lifetime, Marek was known for his studies into various veterinary diseases, and particularly for his ...
The popular brand is coveted for its humane animal treatment, but employees say working conditions are unsafe, a Fresno Bee investigation found. Pitman Farms, maker of ‘humane’ Mary’s ...
Peter Martin Biggs FRS [1] (13 August 1926 — 27 December 2021) was a British scientist who specialised in avian infectious disease. He is known particularly for his work on Marek's disease in poultry, and the development of a vaccine for the virus-caused disease.
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Reticuloendotheliosis virus represents a third distinct etiological group of avian viral neoplasms, after Marek's disease and avian leukosis virus. The various syndromes caused by REV resemble both Marek's and avian leukosis. It is especially seen in chickens, quail, geese, ducks, and turkeys. [2]
This is a list of the deadliest animals to humans worldwide, measured by the number of humans killed per year. Different lists have varying criteria and definitions, so lists from different sources disagree and can be contentious.