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Topic: Asymptomatic carrier


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In the News (Fri 17 Feb 12)

  
  Asymptomatic carrier - Wikipedia, the free encyclopedia
An asymptomatic carrier (or carrier), is a person who is infected with an infectious disease or carries the abnormal gene of a recessive genetic disorder, but displays no symptoms.
Mary Mallon, known as "Typhoid Mary", was an asymptomatic carrier of typhoid fever.
The daughters of Queen Victoria, the princesses Alice and Beatrix, were asymptomatic carriers of the X-linked hemophilia gene (more precisely, an abnormal allele of a gene necessary to produce one of the blood clotting factors).
en.wikipedia.org /wiki/Asymptomatic_carrier   (248 words)

  
 Asymptomatic carrier -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-22)
An asymptomatic carrier (or carrier), is a person who is infected with the agent of an (A disease transmitted only by a specific kind of contact) infectious disease, or carries the abnormal gene of a (Click link for more info and facts about recessive) recessive (A disease or disorder that is inherited genetically) genetic disorder.
(United States cook who was an immune carrier of typhoid fever and who infected dozens of people (1870-1938)) Mary Mallon, known as "Typhoid Mary", was an asymptomatic carrier of (Serious infection marked by intestinal inflammation and ulceration; caused by Salmonella typhosa ingested with food or water) typhoid fever.
Both had children who continued to pass the gene to succeeding generations of the royal houses of (A parliamentary monarchy in southwestern Europe on the Iberian Peninsula; a former colonial power) Spain and (A federation in northeastern Europe and northern Asia; formerly Soviet Russia; since 1991 an independent state) Russia, into which they married.
www.absoluteastronomy.com /encyclopedia/a/as/asymptomatic_carrier.htm   (308 words)

  
 Carrier - Wikipedia, the free encyclopedia
In general, a carrier is a system or process with a specific property or is attributed of something (in physical or in abstract sense).
in biology, an asymptomatic carrier or a carrier-protein
a Lathe carrier is a device that transfers motion to a workpiece.
www.wikipedia.org /wiki/Carrier   (227 words)

  
 Asymptomatic carrier   (Site not responding. Last check: 2007-10-22)
An asymptomatic carrier (or carrier), is a person who is infected with the agent of an infectious disease, or carries the abnormal gene of a recessive genetic disorder.Although unaffected themselves, a carrier can transmit it to others.
There was no way of eradicating thedisease and an attempt was made to restrict her from continuing to work as a cook to avoid spreading it to others.
The daughters of Queen Victoria, theprincesses Alice and Beatrix, were asymptomatic carriers of the X-linked hemophilia gene (more precisely, an abnormal allele of a gene necessary to produce one of the blood clottingfactors).
www.therfcc.org /asymptomatic-carrier-115073.html   (226 words)

  
 X-Inactivation and Muscular dystrophy: PubMed, Skewed, inactivation and muscular. Articles and their abstracts (as of ...
Three of the four manifesting carriers, four of the five asymptomatic carriers, and 31 of the 32 female controls were heterozygous for the CAG repeat of HUMARA.
The manifestation of mild to severe symptoms in female carriers of dystrophin mutations is often the result of the preferential inactivation of the X chromosome carrying the normal dystrophin gene.
These twins carry a deletion, approximately 300 kb in length, in one of their X chromosomes within the dystrophin gene, which is responsible for Duchenne muscular dystrophy (DMD) in one twin [Richards et al.: Am J Hum Genet 46:672-681, 1990].
members.shaw.ca /copingwithillness/pubmedmd20.html   (4383 words)

  
 Encyclopedia: Hemophilia   (Site not responding. Last check: 2007-10-22)
Since the mutations causing the disease are recessive, a woman carrying the defect on one of her X-chromosomes will not be affected by it, as the equivalent allele on her other chromosome would express itself to produce the necessary clotting factors.
Since a man receives his single X-chromosome from his mother, the son of a healthy woman silently carrying the deficient gene will have a 50% chance of inheriting that gene from her and with it the disease.
Prenatal testing, such as amniocentesis, is available to pregnant women who may be carriers of the condition.
www.nationmaster.com /encyclopedia/Hemophilia   (838 words)

  
 Natural Histories of HCV Infection in Men and Women Simulated by the Markov Model   (Site not responding. Last check: 2007-10-22)
Based on 2,251 patient-year data, the probabilities of transition between any two of the four clinical states, i.e., asymptomatic carrier state, chronic hepatitis, liver cirrhosis and hepatocellular carcinoma in one year were calculated.
Probability matrices thus obtained on six each subsets of HCV infection (asymptomatic carrier state, chronic hepatitis and liver cirrhosis in men and women) in their forties, fifties, and sixties, were used to simulate long-term outcomes of HCV infection.
Male asymptomatic carriers aged 40 years were expected to retain the asymptomatic carrier state in 2.6%, evolve into chronic hepatitis in 48.4%, liver cirrhosis in 14.6% and hepatocellular carcinoma in 34.4% after 30 years when they reached 70 years of age, in contrast to 1.9%, 45.3%, 32.8% and 20.0%, respectively, of female asymptomatic carriers.
www.hivandhepatitis.com /hep_c/news/061303a.html   (309 words)

  
 Asymptomatic carrier - Encyclopedia.WorldSearch   (Site not responding. Last check: 2007-10-22)
Athletes may be asymptomatic carriers of ringworm: 'infection control nightmare'.(Children's Health) : An article from: Family Practice News
Athletes may be carriers of ringworm: asymptomatic.(Clinical Rounds) : An article from: Skin & Allergy News
Dopamine transporter concentration is reduced in asymptomatic machado-Joseph disease gene carriers : An article from: The Journal of Nuclear Medicine
encyclopedia.worldsearch.com /asymptomatic_carrier.htm   (297 words)

  
 modB
Carriers are very importnat to transmitting disease because they may not be aware that they are transmitting.
The convalescing carrier is someone who had the illness and appears to be recovered, but in fact may still be transmitting.
Amebiasis (amebic dysentary) agent: Entamoeba histolytica (a protozoon) reservoir: human; usually a chronically ill or asymptomatic carrier transmission: fecal [direct, indirect (food, water, flies)] acute patients pose limited danger (absence of cysts) symptoms: often asymptomatic; fever, chills, diarrhea stools contain blood, mucus 6.
www.csun.edu /~vchsc006/353/mB.html   (1198 words)

  
 Tramadol, buy tramadol, antibiotics, Weight Loss drugs, weight loss herbs, weight loss herbal formula, weight loss, ...   (Site not responding. Last check: 2007-10-22)
To quantify and characterize the asymptomatic carrier state of tinea capitis in school children from the inner city.
The overall prevalence of asymptomatic carriers was not higher in the classes containing index cases.
Forty-five untreated asymptomatic carriers were followed for 2 to 5 months: 19 (42%) became culture-negative; of these, 17 (90%) had a 1+ spore load.
www.hair-loss-alopecia.com /ref-hair-loss/hair-loss-research-abs3.541.html   (680 words)

  
 [No title]   (Site not responding. Last check: 2007-10-22)
The state of harboring a specific infectious agent may occur in an individual with an infection that is inapparent throughout its course (asymptomatic carrier), or in an individual during the incubation period, convalescence, and post-convalescence of a clinically recognizable disease (incubatory carrier and convalescent carrier).
Control of carriers of the infectious agent of communicable disease Carriers, whether transient, convalescent or chronic, of the infectious agent of any communicable disease shall be maintained under observation until repeated laboratory examinations of appropriate specimens show the absence of the infectious agent.
(d) Chronic carriers of the organisms causing typhoid fever and paratyphoid fever shall not be released from supervision until six successive specimens of urine and six successive specimens of feces, the last two of which shall be validated by collection of the specimen in a hospital or otherwise under direct supervision, have been found negative.
www.dph.state.ct.us /phc/docs/73_Reportable_Diseases_and_.doc   (3257 words)

  
 eMedicine - Hereditary Elliptocytosis and Related Disorders : Article Excerpt by: Mandy Meck, MD   (Site not responding. Last check: 2007-10-22)
Clinical manifestations range from an asymptomatic carrier state to severe hemolytic anemia.
Perhaps HE represents a spectrum of disorders with asymptomatic carriers and mild HE at one end and with severe HE and HPP at the other.
The true incidence is unknown because the clinical severity of HE is heterogeneous, and many patients are asymptomatic.
www.emedicine.com /ped/byname/hereditary-elliptocytosis-and-related-disorders.htm   (605 words)

  
 Viral Hepatitis B   (Site not responding. Last check: 2007-10-22)
The course of the infection is similar to the asymptomatic transient infection with the difference that there is the symptomatology of jaundice with marked elevation of ALT and AST and all viral antigens,HBs, Hbc, He HBV-DNA.
Carrier children should not be treated with alpha-interferon.
It is extremely rare in chronic carriers, however evidence of HBV infection is very frequent (11-56%) in glomerulonephritis.(Bodsworth N, et al.J. Infect Dis.
www.meddean.luc.edu /lumen/meded/orfpath/virhepb.htm   (3305 words)

  
 Abstract: Antiphospholipid Syndrome and Asymptomatic Carriers of Antiphospholipid Antibody: Prospective Analysis of 404 ...
Asymptomatic carriers were not treated, but specific prophylaxis with low molecular weight heparin or aspirin was prescribed for the periods when individuals were at increased risk of thrombosis.
The proportion of subjects with aPL was similar in patients and in asymptomatic carriers.
Differences between patients and asymptomatic carriers with aPL are at least partially dependent on the proportion of coincident vascular risk factors.
www.jrheum.com /abstracts/abstracts04/1560.html   (391 words)

  
 CDC - "Cloud" Health-Care Workers
Asymptomatic health-care workers colonized rectally, vaginally, or on the skin with group A streptococci have caused outbreaks of surgical site infection by airborne dispersal.
No prolonged carrier state has been identified (10,11), and transmission is most likely associated with active symptoms, particularly coughing (12).
The health-care workers carrying GAS may be present during surgery (e.g., anesthesiologist, operating room nurse) (16,17) or not present at all (e.g., medical attendant, operating room technician) (14,15,18).
www.cdc.gov /ncidod/eid/vol7no2/sherertz.htm   (3115 words)

  
 Planet Mobility "Salmonella"   (Site not responding. Last check: 2007-10-22)
Asymptomatic human carriers ("typhoid Marys") may spread the disease.
First, an asymptomatic human carrier state exists for the agents of either form of the disease.
Salmonellosis is a major public health problem because of its large and varied animal reservoir, the existence of human and animal carrier states, and the lack of a concerted nationwide program to control salmonellae.
www.planetmobility.com /news/spinaldisease/salmonella.htm   (2636 words)

  
 Medium-Chain Acyl-Coenzyme A Dehydrogenase Deficiency
Because asymptomatic parents and sibs may have MCAD deficiency, biochemical evaluation and/or molecular genetic testing should be offered to both parents and all sibs.
Because of the high carrier frequency for the K304E mutation in Caucasians of northern European origin, carrier testing should be offered to reproductive partners of individuals with MCAD deficiency.
Carrier testing using molecular genetic techniques is available on a clinical basis once the mutations have been identified in a proband.
www.geneclinics.org /profiles/mcad/details.html   (6268 words)

  
 Typhoid Fever -- Drug Companies - Pipeline Drugs -- Clinical Trials
asymptomatic carrier of typhoid fever, suffering no symptoms, but capable of infecting others.
Mary Mallon (known as "Typhoid Mary") became the first American carrier to be identified and traced.
Centers for Disease Control approximately 5% of people who contract typhoid continue to carry the disease after they recover.
www.biotech100.com /biotechnology_encyclopedia/typhoid_fever.htm   (181 words)

  
 Haemophilus somnus Induces Apoptosis in Bovine Endothelial Cells In Vitro -- Sylte et al. 69 (3): 1650 -- Infection and ...
The pathogenic isolates (2336, 8025, and 649) and asymptomatic carrier isolates (127P and 129Pt) of H.
LOS was isolated from pathogenic isolates (649 and 738) and asymptomatic carrier isolates (127P and 129Pt) of H.
somnus isolates 8025, 649, and 2336 and asymptomatic carrier isolates 127P and 129Pt at an MOI of 10:1 for 6 h at 37°C with 5% CO Apoptosis was detected by Hoechst 33342 staining and TUNEL on separate coverslips.
iai.asm.org /cgi/content/full/69/3/1650   (5272 words)

  
 Huntington's disease progression: PET and clinical observations -- Andrews et al. 122 (12): 2353 -- Brain
Asymptomatic mutation carriers are shown as square symbols and are numbered from 1 to 9 corresponding to subjects 1–9 in the text.
Mutation carriers who were asymptomatic with no signs of the disease at baseline are shown as squares and clinically affected patients are shown as circles.
in a cohort of asymptomatic Huntington's disease mutation carriers
brain.oxfordjournals.org /cgi/content/full/122/12/2353   (6096 words)

  
 Albinism - Biocrawler definition:Albinism - Biocrawler   (Site not responding. Last check: 2007-10-22)
Where an individual receives one albinism gene and one normal gene, that person will not show outward signs of the condition, but will become a carrier of the recessive gene.
Where two carriers of the recessive gene have a child together, that child will have a one in four chance of receiving two albinism genes, and having albinism.
The incidence of carriers in the British population is approximately 1 in 50.
www.biocrawler.com /biowiki/Albino   (1132 words)

  
 AAVI Newsletter February, 2000   (Site not responding. Last check: 2007-10-22)
Asymptomatic carrier isolate LOS lacks sugars past the N-AC residue of their LOS and has a truncated oligosaccharide chain.
The purpose of this study was to compare the apoptotic effect of pathogenic and asymptomatic carrier isolates of H.
Apoptosis was detected in pathogenic and asymptomatic carrier isolate LOS treated cells as early as 2 hours and increased during the incubation periods (2, 6 and 22 hours).
www.cvm.missouri.edu /aavi/newsletter_2_00/newsletter_2_00.htm   (7442 words)

  
 American Family Physician: Screening for hepatitis B - Prevention in Clinical Practice   (Site not responding. Last check: 2007-10-22)
The most important benefit of detecting HBV infection or carrier state in asymptomatic persons is the prevention of transmission of the virus to others.
Treatment of their newborns would prevent the development of HBV carrier status in an estimated 3,500 neonates each year.3 At $12 to $20 per test,20 the HBsAg assay is an expensive screening test to be performed on large numbers of women.
Routine testing of asymptomatic persons for HBV infection is recommended primarily as a means of identifying persons in high-risk groups who require vaccination.
www.findarticles.com /p/articles/mi_m3225/is_n1_v40/ai_7766927   (771 words)

  
 ASK THE VET (Avian influenza)
Asymptomatic carrier birds may also transmit the virus.
Some infected birds may be asymptomatic and recover, while others may die suddenly, without showing signs of illness.
An important way of preventing exposure to the virus is preventing contact of domestic birds with wild birds and migratory birds that may be carrying the virus.
www.theaviary.com /s0196-13.shtml   (379 words)

  
 Utah Code Section 26-6-2
(1) "Carrier" means an infected individual or animal who harbors a specific infectious agent in the absence of discernible clinical disease and serves as a potential source of infection for man.
The carrier state may occur in an individual with an infection that is inapparent throughout its course, commonly known as healthy or asymptomatic carrier, or during the incubation period, convalescence, and postconvalescence of an individual with a clinically recognizable disease, commonly known as incubatory carrier or convalescent carrier.
Under either circumstance the carrier state may be of short duration, as a temporary or transient carrier, or long duration, as a chronic carrier.
www.le.state.ut.us /~code/TITLE26/htm/26_06003.htm   (620 words)

  
 An Itch in Time... Practical Treatment of Tinea Capitis   (Site not responding. Last check: 2007-10-22)
And since untreated asymptomatic carriers may continue their carrier status even 2 months later, it has been recommended that all members of the household be treated simply to eliminate any carriers within the family.[6]

Tinea capitis may appear clinically in several typical scenarios.

Asymptomatic carriers within the home most likely play the greatest role in transmission.
Asymptomatic dermatophyte carriers in the households of children with tinea capitis.
www.medscape.com /content/2001/00/40/83/408302/408302.xml   (1008 words)

  
 Equine Infectious Anemia and the Coggins Test
It is because of these healthy appearing carriers that we test horses.
Most asymptomatic EIA infected horses will not show any recognizable signs but will test positive on a Coggins test.
It was originally thought that the testing program would eradicate EIA but every year there are just enough asymptomatic carriers to perpetuate the problem.
www.eqgroup.com /Library/coggins.htm   (577 words)

  
 Chapter 21 Definitions   (Site not responding. Last check: 2007-10-22)
A form of viral hepatitis transmitted intestinally with no carrier state or chronic form.
A form of viral hepatitis usually transmitted by blood and having chronic stages and carrier states.
Asymptomatic period between secondary and tertiary acquired syphilis
www.usc.edu /hsc/dental/PTHL312abc/312c/21/dfs_defs.html   (1226 words)

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