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Scabies (/ ˈ s k eɪ b iː z, ˈ s k eɪ b i iː z /; [10] also sometimes known as the seven-year itch) [1] is a contagious human skin infestation by the tiny (0.2–0.45 mm) mite Sarcoptes scabiei, [1] [3] variety hominis. The word is from Latin: scabere, lit. 'to scratch'. [11] The most common symptoms are severe itchiness and a pimple-like ...
Succisa pratensis, also known as devil's-bit or devil's-bit scabious, is a flowering plant in the honeysuckle family Caprifoliaceae.It differs from other similar species in that it has four-lobed flowers, whereas Scabiosa columbaria (small scabious) and Knautia arvensis (field scabious) have five lobes and hence it has been placed in a separate genus in the same family. [2]
The theory gained much support, as it was known to be more common on light gritty soils. In 1890 however, Roland Thaxter isolated a microbe that could cause common scab lesions, naming it Oospora scabies. [4] Over the years, this species was renamed several times, now being known as Streptomyces scabies. [5]
Streptomyces scabiei (also wrongly named Streptomyces scabies) [1] is a streptomycete bacterium species found in soils around the world. [2] Unlike most of the 500 or so Streptomyces species it is a plant pathogen causing corky lesions to form on tuber and root crops as well as decreasing the growth of seedlings.
Scabiosa / s k eɪ b i ˈ oʊ s ə / [2] is a genus in the honeysuckle family (Caprifoliaceae) of flowering plants. [3] Many of the species in this genus have common names that include the word scabious, but some plants commonly known as scabious are currently classified in related genera such as Knautia and Succisa; at least some of these were formerly placed in Scabiosa.
The scabies mite Sarcoptes scabiei var. hominis goes through four stages in its lifecycle: egg, larva, nymph, and adult. Upon infesting a human host, the adult female burrows into the stratum corneum (outermost layer of skin), where she deposits two or three eggs per day.
In the Second World War, he studied the control of scabies mite, an infection that was keeping thousands of soldiers in hospital. Mellanby meticulously counted all female mites that had burrowed into 886 soldiers, and determined that the average scabies sufferer harbors only 11.3 mites.
Contamination control is the generic term for all activities aiming to control the existence, growth and proliferation of contamination in certain areas. Contamination control may refer to the atmosphere as well as to surfaces, to particulate matter as well as to microbes and to contamination prevention as well as to decontamination.