Gastrointestinal Stromal Tumour

          

http://www.histopathology-india.net/Infection.htm

           HISTOPATHOLOGY INDIA.COM

        Adult Respiratory Distress Syndrome

   Dr  Sampurna Roy  MD

 
Web www.histopathology-india.net

Hookworm Infection

Impetigo

Infective Endocarditis

Influenza

Isosporiasis

Klebsiella pneumoniae

Lassa Fever

Leishmaniasis

Legionellosis

Leprosy

Malaria

Marburg Virus Disease

Meningococcal Infection

Microsporidia

Mycobacterium Leprae Inf.

Mycobacterium Avium Intracellulare

Mycobacterium ulcerans Inf.

Mycoplasma pneumonia

Necrotizing Enteritis (pig-bel)

Nocardiosis

Norwalk Virus related Diarrhea

Onchocerciasis

Paramyxovirus Infection

Poliomyelitis

Pseudomembranous Colitis 

Pseudallescheriasis

Psittacosis

Pulmonary Infection

Q Fever (Coxiella burnetii)

Rabies

Rat Bite Fever

Relapsing Fever

Respiratory syncytial virus infection

Rhinoscleroma

Rhinosporidiosis

Rocky Mountain Spotted Fever

Rotavirus diarrhea

Shigellosis

Skin infections- (Histo-pathological patterns)

Staphylococcal Infection

Streptococcal Infection

Strongyloidiasis

Syphilis

Tetanus

Toxic Shock Syndrome

Toxoplasmosis

Trachoma

Trichinosis

Trichosporonosis

 

 

Viral hemorrhagic fevers are a group of distinct acute viral infections that cause varying degrees hemorrhage and shock, and sometimes death.

 There are many similar viral hemorrhagic fevers in different parts of the world, often named for the area where they are first described.

Viruses causing hemorrhagic fevers in man belong to the following virus groups:

Togavirus - Chikungunya ;

Flavivirus  - Dengue ; Yellow  Fever ; Kyasanur Forest Disease ; Omsk hemorrhagic fever  ;

Arenavirus  - Argentinian hemorrhagic fever; Bolivian hemorrhagic fever ; Lassa Fever  ;

Filovirus - Ebola Virus ; Marburg Virus  ;

Phlebovirus - Rift Valley Fever  ;

Nairovirus - Crimean-Congo Hemorrhagic Fever  and

Hantavirus - Hemorrhagic fever with renal syndrome.

Most hemorrhagic fever viruses are zoonoses, with the possible exception of the four dengue viruses, which may continually circulate among humans.

Hemorrhagic fever viruses are found in both temperate and tropical habitats and generally infect both sexes and all ages, although the age and sex of those infected are frequently influenced by the possibility of occupational exposure.

Transmission to humans is frequently by bite of an infected tick or mosquito or via aerosol from infected rodent hosts.

Aerosol and nosocomial transmission are especially important with Lassa, Junin, Machupo, Crimean-Congo hemorrhagic fever, Marburg, and Ebola viruses.

Seasonality of hemorrhagic fever among humans is influenced for the most part by the dynamics of infected arthropod or vertebrate hosts.

Mammals, especially rodents, appear to be important natural hosts for many hemorrhagic fever viruses.

The transmission cycle for each hemorrhagic fever virus is distinct and is dependent upon the characteristics of the primary vector species and the possibility for its contact with humans.

Hemorrhagic fever virus infections can be approached by different therapeutic strategies:

(i) vaccination; (ii) administration of high-titered antibodies; and (iii) treatment with antiviral drugs.

Depending on the molecular target of their interaction, antiviral agents could be classified as follows:  IMP dehydrogenase inhibitors (i.e., ribavirin and its derivatives); OMP decarboxylase inhibitors (i.e.  pyrazofurin) ; CTP synthetase inhibitors (i.e., cyclopentylcytosine and cyclopentenylcytosine)  ; SAH hydrolase inhibitors (i.e., neplanocin A)  ; polyanionic substances (i.e., sulfated polymers)  ; interferon and immunomodulators.

June 2007
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Acrodermatitis chronica atrophicans

Actinomycosis

Adenovirus

African Histoplasmosis (Histoplasma Duboisii)

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Bartonellosis

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Epstein-Barr Virus infection