The first case was identified in WuhanChina in Decemberthough evidence suggests that the virus may have already been actively spreading months earlier in places such as Italy. Common symptoms of COVID include fever, cough, fatigue, breathing difficultiesand loss of smell and taste.
ARDS can be precipitated by cytokine storms[13] multi-organ failureseptic shockand blood clots. Longer-term damage to organs in particular, the lungs and heart has been observed. There is concern about a significant number of patients who have recovered from the acute phase of the disease but continue to experience a range of effects—known as long COVID —for months afterwards. These effects include severe fatigue, memory loss and other cognitive issues, low grade fever, muscle weakness, and breathlessness. COVID spreads via The Case Of Patientm b And Her number of means, primarily involving saliva and other bodily fluids and excretions.
These fluids can form small droplets and aerosolswhich can spread as an infected person breathes, coughs, sneezes, sings, or speaks.
This is suspected to be the main go here of transmission. The virus may also spread via fomites contaminated surfaces and direct contact. People remain infectious for up to ten days in moderate cases, and two weeks in severe cases. The standard diagnosis method is by real-time reverse transcription polymerase chain reaction rRT-PCR Cade a nasopharyngeal swab. Preventive measures include social distancingquarantiningventilation of indoor spaces, covering coughs and sneezes, hand washingand keeping unwashed hands away from the face. The use of face masks or coverings has been recommended in public settings to minimise the risk of transmissions.
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There are currently no proven vaccines or specific treatments for COVID, though several are in development. Management involves the treatment of symptomssupportive careisolationand experimental measures. Some symptoms of COVID can be relatively non-specific ; the two most common symptoms are fever 88 percent and dry cough 68 percent. Emergency symptoms include difficulty breathing, persistent chest pain or pressure, sudden confusion, difficulty waking, O bluish face or lips; immediate medical attention is advised if these symptoms are present. COVID spreads from person to person mainly through the respiratory route after an infected person coughs, sneezes, sings, talks or breathes. A new infection occurs when virus-containing particles exhaled by an infected person, either respiratory droplets or aerosolsget into The Case Of Patientm b And Her mouth, nose, or eyes of other people read more are in close contact with the infected person.
Long Patientmm airborne transmission has been shown to occur in hospital wards.
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Airborne transmission has been demonstrated in healthcare settings, with certain aerosol-generating medical procedures performed on COVID patients, [33] [34] and regularly occurs in crowded and inadequately ventilated indoor spaces, such as restaurants, nightclubs or choirs. Kissingphysical intimacy, and other forms of direct contact can easily transmit the virus and thus lead to COVID in people exposed to such contact. The number of people generally infected by one infected person varies; as of September it was estimated that one infected person will, on average, infect between two and three other people. There is a major role of " super-spreading events ", where many people are infected by one person. It was first isolated from three people with pneumonia connected to the cluster of acute respiratory illness cases in Wuhan.
Outside the human body, the virus Caxe destroyed by household soap, which bursts its protective bubble.
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Genetic analysis has revealed that the coronavirus genetically clusters with the genus Betacoronavirusin subgenus Sarbecovirus lineage B together with two bat-derived strains. COVID can affect the upper respiratory tract sinuses, nose, and throat and the lower respiratory tract windpipe and lungs.
While virus has been detected in cerebrospinal fluid of autopsies, the exact mechanism by which it invades the CNS remains unclear Essay Reality Television may first involve invasion of peripheral nerves given the low levels of ACE2 in the brain. The virus also affects gastrointestinal organs as ACE2 is abundantly expressed in the glandular cells of gastricduodenal and rectal epithelium [55] as well as endothelial cells and enterocytes of the small intestine. The virus can cause acute myocardial injury and chronic damage to the cardiovascular system. Infection appears to set off a chain of vasoconstrictive responses within the body, constriction of blood vessels within the pulmonary circulation has also been posited as a mechanism in which oxygenation decreases alongside the presentation of viral pneumonia.
Another common cause of death is complications related to the kidneys. Systemic inflammation results in vasodilationallowing inflammatory lymphocytic and monocytic infiltration of the lung and the heart.]
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