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Showing posts with label infection. Show all posts
Showing posts with label infection. Show all posts

Sunday, December 27, 2015

PARASITIC MENINGOENCEPHALITIS / CONTAMINATED WATER AND SWIMMING







Parasitic Meningitis


Causes

Primary amebic meningoencephalitis (PAM) is a very rare form of parasitic meningitis that causes a brain infection that is usually fatal. The parasite enters the body through the nose and is caused by the microscopic ameba (a single-celled living organism) Naegleria fowleri.

Risk Factors

Naegleria fowleri is found around the world. In the United States, the majority of infections have been caused by Naegleria fowleri from warm freshwater located in southern-tier states.1 The ameba can be found in:
  • Bodies of warm freshwater, such as lakes and rivers
  • Geothermal (naturally hot) water, such as hot springs
  • Warm water discharge from industrial plants
  • Geothermal (naturally hot) drinking water sources
  • Swimming pools that are poorly maintained, minimally-chlorinated, and/or un-chlorinated
  • Water heaters. Naegleria fowleri grows best at higher temperatures up to 115°F (46°C) and can survive for short periods at higher temperatures.2, 3
  • Soil
Naegleria fowleri is not found in salt water, like the ocean.

Transmission

Naegleria fowleri infects people by entering the body through the nose. This typically occurs when people go swimming or diving in warm freshwater places, like lakes and rivers.1 The Naegleria fowleri ameba travels up the nose to the brain where it destroys the brain tissue.
You cannot be infected with Naegleria fowleri by drinking contaminated water. In very rare instances, Naegleria infections may also occur when contaminated water from other sources (such as inadequately chlorinated swimming pool water or contaminated tap water) enters the nose, for example when people submerge their heads or cleanse their noses during religious practices4, 5, and when people irrigate their sinuses (nose) using contaminated tap water6.
The Naegleria fowleri ameba causes primary amebic meningoencephalitis (PAM) when it travels up the nose to the brain and destroys the brain tissue.Naegleria fowleri infections are very rare. In the 10 years from 2003 to 2012, 31 infections were reported in the U.S. All were fatal.
PAM cannot be spread from one person to another.
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Signs and Symptoms

Naegleria fowleri causes the disease primary amebic meningoencephalitis (PAM), a brain infection that leads to the destruction of brain tissue. In its early stages, symptoms of PAM may be similar to symptoms of bacterial meningitis.
Initial symptoms of PAM start 1 to 7 days after infection. The initial symptoms include headache, fever, nausea, vomiting, and stiff neck. Later symptoms include confusion, lack of attention to people and surroundings, loss of balance, seizures, and hallucinations. After the start of symptoms, the disease progresses rapidly and usually causes death within about 5 days (range 1 to 12 days).

Diagnosis

PAM is rare. The early symptoms of PAM are more likely to be caused by other more common illnesses, such as bacterial or viral meningitis. People should seek medical care immediately whenever they develop a sudden onset of fever, headache, stiff neck, and vomiting, particularly if they have been in warm freshwater recently.

Treatment

Several drugs are effective against Naegleria fowleri in the laboratory. However, their effectiveness is unclear since almost all infections have been fatal, even when people were treated.
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Prevention

Naegleria fowleri infects people when water containing the ameba enters the body through the nose. Infection is rare and typically occurs when people go swimming or diving in warm freshwater places, like lakes and rivers. Very rarely, infections have been reported when people submerge their heads, cleanse their noses during religious practices, or irrigate their sinuses (nose) using contaminated tap or faucet water. Naegleria fowleri can grow in pipes, hot water heaters, and water systems, including treated public drinking water systems.
Personal actions to reduce the risk of Naegleria fowleri infection should focus on limiting the amount of water going up the nose and lowering the chances that Naegleria fowleri may be in the water.
Please visit the following pages for information on lowering your risk of infection in specific situations:

References

  1. Yoder JS, Eddy BA, Visvesvara GS, Capewell L, Beach MJ. The epidemiology of primary amoebic meningoencephalitis in the USA, 1962-2008.Epidemiol Infect. 2010;138:968-75.
  2. Griffin JL. Temperature tolerance of pathogenic and nonpathogenic free-living amoebas. Science. 1972;178(63):869-70.
  3. Stevens AR, Tyndall RL, Coutant CC, Willaert E. Isolation of the Etiological Agent of Primary Amoebic Meningoencephalitis from Artificially Heated Waters. Appl Environ Microbiol. 1977;34(6):701-705.
  4. CDC. Primary amebic meningoencephalitis associated with ritual nasal rinsing — St. Thomas, U.S. Virgin Islands, 2012. MMWR Morb Mortal Wkly Rep. 2013;62(45):903.
  5. Shakoor S, Beg MA, Mahmood SF, Bandea R, Sriram R, Noman F, et al. Primary amebic meningoencephalitis caused by Naegleria fowleri, Karachi, Pakistan.[PDF - 4 pages] Emerg Infect Dis. 2011:17;258-61.
  6. Yoder JS, Straif-Bourgeois S, Roy SL, Moore TA, Visvesvara GS, Ratard RC, Hill V, Wilson JD, Linscott AJ, Crager R, Kozak NA, Sriram R, Narayanan J, Mull B, Kahler AM, Schneeberger C, da Silva AJ, Beach MJ. Deaths from Naegleria fowleri associated with sinus irrigation with tap water: a review of the changing epidemiology of primary amebic meningoencephalitis. Clin Infect Dis. 2012;1-7.
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Tuesday, November 17, 2015

TBC / TUBERCULOSIS WORLDWIDE



Tuberculosis

Otros nombres: TB 

Introducción

La tuberculosis (TB) es una infección bacteriana causada por un gérmen llamado Mycobacterium tuberculosis. La bacteria suele atacar los pulmones, pero puede también dañar otras partes del cuerpo. La TB se disemina a través del aire, cuando una persona con TB pulmonar tose, estornuda o habla. Si ha estado expuesto debería consultar a un médico para someterse a los exámenes. Hay más probabilidades de que usted se contagie con TB si tiene un sistema inmunitario debilitado.
Los síntomas de la TB pulmonar pueden incluir:
  • Tos severa que dure tres semanas o más
  • Bajar de peso
  • Toser y escupir sangre o mucosidad
  • Debilidad o fatiga
  • Fiebre y escalofríos
  • Sudores nocturnos
Si no se trata adecuadamente, la TB puede ser mortal. Por lo general la TB activa puede curarse con varios medicamentos durante un período largo de tiempo. Las personas con TB latente pueden tomar medicamentos para no desarrollar TB activa.
Centros para el Control y la Prevención de Enfermedades

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Página actualizada 17 noviembre 2015 Tema revisado 30 julio 2015

Wednesday, October 14, 2015

HIV / AIDS Medicines

www.centromedicodecaracas.com.ve

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HIV/AIDS Medicines

Summary

In the early 1980s, when the HIV/AIDS epidemic began, patients rarely lived longer than a few years. But today, there are many effective medicines to fight the infection, and people with HIV have longer, healthier lives.
There are five major types of medicines:
  • Reverse transcriptase (RT) inhibitors - interfere with a critical step during the HIV life cycle and keep the virus from making copies of itself
  • Protease inhibitors - interfere with a protein that HIV uses to make infectious viral particles
  • Fusion inhibitors - block the virus from entering the body's cells
  • Integrase inhibitors - block an enzyme HIV needs to make copies of itself
  • Multidrug combinations - combine two or more different types of drugs into one
These medicines help people with HIV, but they are not perfect. They do not cure HIV/AIDS. People with HIV infection still have the virus in their bodies. They can still spread HIV to others through unprotected sex and needle sharing, even when they are taking their medicines.
NIH: National Institute of Allergy and Infectious Diseases

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Page last updated on 13 October 2015 Topic last reviewed: 22 September 2014