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What is hepatitis A virus (HAV)? Transmission • Anal/oral contact, by
What is hepatitis A virus (HAV)? Transmission • Anal/oral contact, by

... urine/light stools and fever. • The incubation period averages 30 days; however, an infected individual can transmit the virus to others as early as two weeks before symptoms appear. • Symptoms will disappear over a 3 to 6-month period until complete recovery occurs. Treatment There is no specific t ...
Open full article - Acta Veterinaria Brno
Open full article - Acta Veterinaria Brno

... the virus by external mucus, faeces and urine. Carriers shed the agent via sexual products (Kim et al. 1999). The protection against viral diseases by specific vaccines against IHN is being developed for the last few years (Corbeil et al. 2000; Lorenzen et al. 2002; Prost 2003) and some successful v ...
Modeling Infectious Diseases from a Real World Perspective
Modeling Infectious Diseases from a Real World Perspective

... percent, our I(k + 1) 0 may be a few ...
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... “The results are negative. This almost always means you do not have HIV. No further testing is needed unless you think you have been exposed in the past three months. What questions do you have about staying HIV negative?” If high risk behavior: “A negative test means you do not have HIV infection; ...
Hepatitis C - Harm Reduction Coalition
Hepatitis C - Harm Reduction Coalition

... spread through sexual intercourse, but it’s rare. ...
herpes simplex virus
herpes simplex virus

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New Evidence of Long-lasting Persistence of Ebola Virus Genetic
New Evidence of Long-lasting Persistence of Ebola Virus Genetic

... to as the Postebogui cohort). Recruitment is ongoing, and enrollment is conducted at various times after discharge from Ebola treatment centers. After subjects provide informed consent, clinical examination, psychological assessment, and social assessment are performed, and semen specimens are obtai ...
Molecular Characterization of Complete Genome of a Thai Highly
Molecular Characterization of Complete Genome of a Thai Highly

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Western Equine Encephalitis Virus
Western Equine Encephalitis Virus

... Vertical transmission can happen if the mother is infected during the first two trimesters of pregnancy. If ...
Slow Virus Replication: the Role of Macrophages in the Persistence
Slow Virus Replication: the Role of Macrophages in the Persistence

... from the choroid plexus of sheep. The replication cycle is about 24 h and replication occurs by means of a proviral DNA intermediate which integrates into the host cell DNA (Haase & Varmus, 1973). Numerous copies of virus RNA are transcribed from this template and virus maturation occurs at the cell ...
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Sexually transmitted infections, including HIV
Sexually transmitted infections, including HIV

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New strategies for control, prevention and treatment of ISA virus in
New strategies for control, prevention and treatment of ISA virus in

... eight structural proteins and two nonstructural ones. The eight segments of genomic RNA (also know as virion RNA or vRNA) are bound to multiple copies of the viral nucleoprotein (NP). In its 3’ end is located a copy of the RNAdependent RNA- polymerase (RdRp) complex formed by protein basic 1 (PB1), ...
Bloodborne Pathogen Training - Hudson Valley Community College
Bloodborne Pathogen Training - Hudson Valley Community College

... blood collection, but not HIV serologic testing the sample will be preserved by Northeast Health for at least 90 days. If, within 90 days of the incident the employee/student elects to have the baseline sample tested, AMC will test the blood as ...
Effect of Pinus massoniana Lamb. bark extract on lytic cycle of
Effect of Pinus massoniana Lamb. bark extract on lytic cycle of

... immunoblastic lymphomas11. Most of the EBVinduced pathology is attributed to viral latency11. The latest research have implicated reactivation of lytic virus, and specifically the lytic activator protein Zta, in tumorigenesis and autoimmune disease15. During primary infection, lytic replication is a ...
Specific detection of minus strand hepatitis A
Specific detection of minus strand hepatitis A

... The biosynthesis of RNA directed by an RNA template is a reaction that is unique to RNA viruses. Hepatitis A virus (HAV) contains a single, plus strand RNA genome. Viral RNA replication occurs in the cytoplasma of infected cells, and involves first the synthesis of a minus strand RNA molecule. The m ...
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www.FAETC.org
www.FAETC.org

... Lopinavir/ritonavir (co-formulated as Kaletra®) + (lamivudine or emtricitabine) + (stavudine or abacavir or tenofovir or didanosine) Nelfinavir + (lamivudine or emtricitabine) + (zidovudine or stavudine or abacavir or tenofovir or didanosine) Saquinavir (hgc* or tablet)/ritonavir¶ + (lamivudine or e ...
投影片 1 - 財團法人醫藥品查驗中心
投影片 1 - 財團法人醫藥品查驗中心

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Myxoma virus tropism in human tumor cells
Myxoma virus tropism in human tumor cells

... ovarian, breast, bone and skin (Table 2). Cell permissiveness was determined based on the presence of detectable X-gal stained foci 48 hours pi. Cell lines where only isolated individual blue cells were observed were scored as non-permissive, however, it should be noted that in these cases myxoma vi ...
Causes and Spread of Infection – Unit Information
Causes and Spread of Infection – Unit Information

... Viruses target specific cells in the body, such as those in the genitals or upper respiratory tract. Some target certain age groups, such as babies or young children, such as those that cause croup. The rabies virus targets the cells in the host's nervous system. Viruses may target skin cells and ca ...
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HIV



The human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and acquired immunodeficiency syndrome (AIDS). AIDS is a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. Without treatment, average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype. Infection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate, or breast milk. Within these bodily fluids, HIV is present as both free virus particles and virus within infected immune cells.HIV infects vital cells in the human immune system such as helper T cells (specifically CD4+ T cells), macrophages, and dendritic cells. HIV infection leads to low levels of CD4+ T cells through a number of mechanisms, including apoptosis of uninfected bystander cells, direct viral killing of infected cells, and killing of infected CD4+ T cells by CD8 cytotoxic lymphocytes that recognize infected cells. When CD4+ T cell numbers decline below a critical level, cell-mediated immunity is lost, and the body becomes progressively more susceptible to opportunistic infections.
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