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Signs and symptoms can range from none to mild (headaches, muscle pains, and fevers) to severe (bleeding in the lungs or meningitis). [5] Weil's disease (/ ˈ v aɪ l z / VILES), [12] the acute, severe form of leptospirosis, causes the infected individual to become jaundiced (skin and eyes become yellow), develop kidney failure, and bleed. [6]
Drs. Eugeniusz Lazowski and his medical-school friend Stanisław Matulewicz were practicing in the small town of Rozwadów in Poland during World War II.Dr. Matulewicz realized that since Proteus vulgaris strain OX19 was used to manufacture the then-common Weil-Felix antibody-agglutination test for typhus, inoculating villagers with dead Proteus would cause a false positive result without ...
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Research in the 1920s and 1930s identified what appeared to be a new type of Rickettsia, isolated from ticks, that was able to pass through filters.The first description of what may have been Coxiella burnetii was published in 1930 by Hideyo Noguchi, but since his samples did not survive, it remains unclear as to whether it was the same organism.
Theodor Otto Diener (28 February 1921 – 28 March 2023) was a Swiss-American plant pathologist. [1] In 1971, he discovered that the causative agent of the potato spindle tuber disease is not a virus, but a novel agent, which consists solely of a short strand of single-stranded RNA without a protein capsid, eighty times smaller than the smallest viruses.
An etiological agent of disease may require an independent co-factor, and be subject to a promoter (increases expression) to cause disease. An example of all the above, which was recognized late, is that peptic ulcer disease may be induced by stress, requires the presence of acid secretion in the stomach, and has primary etiology in ...
Bartonella henselae, formerly Rochalimæa henselae, is a bacterium that is the causative agent of cat-scratch disease [1] (bartonellosis). Bartonella henselae is a member of the genus Bartonella, one of the most common types of bacteria in the world. [specify] It is a facultative intracellular microbe that targets red blood cells.
Accordingly, many diseases that primarily exhibit this symptom are called blights. Several notable examples are: [citation needed] Late blight of potato, caused by the water mold Phytophthora infestans (Mont.) de Bary, the disease which led to the Great Irish Famine; Southern corn leaf blight, caused by the fungus Cochliobolus heterostrophus ...