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Epidemics of the 19th century were faced without the medical advances that made 20th-century epidemics much rarer and less lethal. Micro-organisms (viruses and bacteria) had been discovered in the 18th century, but it was not until the late 19th century that the experiments of Lazzaro Spallanzani and Louis Pasteur disproved spontaneous generation conclusively, allowing germ theory and Robert ...
Legionella pneumophila is the most common cause, but sometimes other species of Legionella bacteria also cause Legionnaires' disease. [ 15 ] [ 16 ] The terms "Philadelphia fever" and "Legion fever" appear to have been used at the time of the outbreak and for shortly thereafter, [ 17 ] although at least one 2008 source which covers disease in a ...
An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal infections, an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered an epidemic. [1]
Common Common [6] Common Nasal congestion Common Common Sometimes Sneezing Very common Very common [6] Sometimes Sore throat Sometimes (post-nasal drip) Very common [6] Sometimes Cough Sometimes Common (mild to moderate, hacking) [6] Common (dry cough, can be severe) Headache Uncommon Rare Common Fever Never Rare in adults, possible in children [6]
It is most often reported 1) post-operatively after endotracheal extubation or 2) after sudden reflux of gastric contents. [ 2 ] [ 4 ] [ 1 ] It is common in drowning. It is estimated that in 10% of cases of drowning as a response to inhalation of water, death occurs due to asphyxia due to laryngospasm without any water in the lungs. [ 5 ]
It is a commonly encountered otorhinolaryngological (ENT) emergency. [14] The number of new cases per year of peritonsillar abscess in the United States has been estimated approximately at 30 cases per 100,000 people. [15] In a study in Northern Ireland, the number of new cases was 10 cases per 100,000 people per year. [16]
A 40-watt CO 2 laser used in otorhinolaryngology Royal National Throat, Nose and Ear Hospital founded in 1874, in London. Otorhinolaryngology (/ oʊ t oʊ ˌ r aɪ n oʊ ˌ l ær ɪ n ˈ ɡ ɒ l ə dʒ i / oh-toh-RY-noh-LARR-in-GOL-ə-jee, abbreviated ORL and also known as otolaryngology, otolaryngology – head and neck surgery (ORL–H&N or OHNS), or ear, nose, and throat (ENT) ) is a ...
Pennsylvania's history of human habitation extends to thousands of years before the foundation of the Province of Pennsylvania. Archaeologists generally believe that the first settlement of the Americas occurred at least 15,000 years ago during the last glacial period , though it is unclear when humans first entered present-day Pennsylvania.