severity

Examples of severity in the following topics:

• Gammaproteobacteria

  • Gammaproteobacteria is a class of several medically, ecologically and scientifically important groups of bacteria.
  • Gammaproteobacteria is a class of several medically, ecologically and scientifically important groups of bacteria, such as the Enterobacteriaceae (Escherichia coli), Vibrionaceae and Pseudomonadaceae .
  • The Gammaproteobacteria comprise several medically and scientifically important groups of bacteria, such as the Enterobacteriaceae, Vibrionaceae and Pseudomonadaceae.
  • Phylogenetically, in the Enterobacteriales, several peptidoglycan-less insect endosymbionts form a sister clade to the Enterobacteriaceae, but since they are not validly described, this group is not officially a taxon; examples of these species are Sodalis, Buchnera, Wigglesworthia, Baumannia and Blochmannia.
  • Members of the Enterobacteriaceae can be trivially referred to as enterobacteria, as several members live in the intestines of animals.

• Chronic Fatigue Syndrome

  • The disorder may also be referred to as myalgic encephalomyelitis (ME), post-viral fatigue syndrome (PVFS), chronic fatigue immune dysfunction syndrome (CFIDS), or several other terms.
  • Symptoms of CFS include post-exertional malaise; unrefreshing sleep; widespread muscle and joint pain; sore throat; headaches of a type not previously experienced; cognitive difficulties; chronic, often severe, mental and physical exhaustion; and other characteristic symptoms in a previously healthy and active person .
  • CFS symptoms vary from person to person in number, type, and severity.
  • The majority of CFS cases start suddenly, usually accompanied by a "flu-like illness"while a significant proportion of cases begin within several months of severe adverse stress.

• Allergic Responses to Drugs

  • The worst allergic reactions can be very severe and result in anaphylaxis .
  • Anaphylaxis is an extremely severe allergic reaction caused when histamines are overproduced leading to severe contraction of bronchial muscles.
  • Other less severe symptoms of an allergic reaction can include, hives, angioedema (tissue swelling under the skin, often on the face), tight throat, coughing, wheezing, or watery eyes.
  • While the most severe cases can result in anaphylaxis, most reactions are not severe.

• Injuring the Plasma Membrane

  • Several types of antimicrobial drugs function by disrupting or injuring the plasma membrane.
  • It serves as the attachment surface for several extracellular structures, including the cell wall, glycocalyx, and intracellular cytoskeleton.
  • There are several types of antimicrobial drugs that function by disrupting or injuring the plasma membrane.

• Disease Severity and Duration

  • The severity and duration of diseases vary greatly and are important for epidemiological studies.
  • Severity of illness is defined as the extent of organ system derangement or physiologic decompensation of a patient.
  • A flare-up can refer to either the recurrence of symptoms or an onset of more severe symptoms.
  • The scope of a disease also affects its severity and duration:
  • Discuss the severity and various types of disease duration, including: acute, chronic, flare-up, refractory, progressive, remission and a cure

• Salmonellosis

  • However, in some cases the diarrhea may be so severe that the patient becomes dangerously dehydrated and must be taken to a hospital.
  • The elderly, infants, and those with impaired immune systems are more likely to develop severe illness.
  • These symptoms can be severe, especially in young children and the elderly.
  • Shock of mixed character (with signs of both hypovolemic and septic shock) is more common in severe salmonellosis.
  • Oliguria and azotemia develop in severe cases as a result of kidney involvement due to hypoxia and bacteremia.

• Sepsis and Septic Shock

  • Septic shock is a medical condition as a result of severe infection and sepsis, though the microbe may be systemic or localized to a particular site.
  • Sepsis is an illness in which the body has a severe response to bacteria or other germs.
  • Severe sepsis is the systemic inflammatory response, infection, and the presence of organ dysfunction.
  • Once severe sepsis worsens to the point where blood pressure can no longer be maintained with intravenous fluids alone, then the criteria have been met for septic shock.
  • Compare and contrast the symptoms of: sepsis, severe sepsis, septic shock

• Shared Features of Archaea and Eukaryotes

  • Archaea possess genes and several metabolic pathways that are more closely related to those of eukaryotes than prokaryotes.
  • Despite this visual similarity to bacteria, archaea possess genes and several metabolic pathways that are more closely-related to those of eukaryotes, notably the enzymes involved in transcription and translation.

• Noncholera Vibrios

  • Vibrio is a Gram-negative bacteria possessing a curved rod shape (comma shape), several species of which can cause foodborne infection.
  • Several species of Vibro can cause food borne infection, usually associated with eating undercooked seafood.

• Extent of Host Involvement

  • The appearance and severity of disease resulting from the presence of any pathogen depends upon the ability of that pathogen to damage the host as well as the ability of the host to resist the pathogen.
  • An opportunistic disease requires impairment of host defenses, which may occur as a result of several factors such as genetic defects, exposure to antimicrobial drugs or immunosuppressive chemicals, exposure to ionizing radiation, or as a result of an infectious disease with immunosuppressive activity.
  • Primary pathogens may also cause more severe disease in a host with depressed resistance than would normally occur in an immunosufficient host.