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STI Handout
STI Handout

... Viral infection/inflammation of the liver 90-95% of adults will recover completely on their own, but 5-10% will develop a chronic liver infection, which increases their risk for liver disease and liver cancer. Hep B is highly infectious and can be transmitted via semen, vaginal fluids, saliva, urine ...
mouse hepatitis virus
mouse hepatitis virus

... Maintain regular health monitoring of supplier sub-populations and strict protocols for barrier colonies. Immunocompetent mice usually shed virus for 2-3 weeks, so infection can be eliminated by not introducing new susceptible mice for several weeks (stop breeding or purchasing). It should be noted ...
Prokaryotes - Stark home page
Prokaryotes - Stark home page

... Worry now that there will be an avian (bird) flu pandemic H5N1 ...
4/20 & 4/21 - 7th Grade Agenda
4/20 & 4/21 - 7th Grade Agenda

Master slide - Columbia University
Master slide - Columbia University

... Do not need to change their sexual practices Should discuss with their partner – Risk (low but not absent) of sexual transmission – Counseling and testing of partner should be individualized • May provide couple with reassurance • Some couples might decide to use barrier precautions to lower limited ...
Viruses in the placenta
Viruses in the placenta

... been conducted, but it is interesting to ...
viral hemorrhagic fever
viral hemorrhagic fever

... In human… they are associated with three types of clinical syndrome. # We will discuss only hemorrhagic fever in this course. #There are two viruses not associated with hemorrhagic manifestations and they are : West Nile virus and Sand Fly Fever. - WEST NILE FEVER: Caused more than 10,000 of cases w ...
Title of Presentation Myriad Pro, Bold, Shadow, 28pt
Title of Presentation Myriad Pro, Bold, Shadow, 28pt

... Updates to ACIP Statement o Hepatitis B vaccine birth dose administered within 24 hours of birth for medically stable infants weighing ≥2,000 grams and born to HBsAgnegative mothers o Testing HBsAg-positive pregnant women for hepatitis B virus (HBV) DNA to guide the use of maternal antiviral therap ...
Hepatitis C and Human Immunodeficiency Virus Envelope Proteins
Hepatitis C and Human Immunodeficiency Virus Envelope Proteins

... We hypothesized that hepatocytes exposed to hepatitis C virus (HCV) and human immunodeficiency virus (HIV) might be injured via an “innocent bystander” mechanism due to cell-surface binding of viral proteins. To assess this, we studied the effects of HCV envelope protein E2 and T-tropic HIV envelope ...
12Immuniz
12Immuniz

... 1. Mutation. This may lead to reversion to virulence (this is a major disadvantage) 2. Spread to contacts of the vaccinee who have not consented to be vaccinated (This could also be an advantage in communities where vaccination is not 100%) 3. Spread of the vaccine virus that is not standardized and ...
Attachment B - George Mason University
Attachment B - George Mason University

... I understand that due to my occupational exposure to blood or other potentially infectious materials I may be at risk of acquiring Hepatitis B virus (HBV) infection. I have been given the opportunity to be vaccinated with the HBV vaccine, at no charge to myself. However, I decline the HBV vaccine at ...
Week 28, 2015
Week 28, 2015

... "H5N1 flu" and "H7N9 flu", which were respectively listed as a Category I Notifiable Infectious Disease and a Category V Notifiable Infectious Disease were removed from the list on the same day. ...
THE ROLE OF INFECTIONS IN THE EMERGENCE OF NON
THE ROLE OF INFECTIONS IN THE EMERGENCE OF NON

... • Chronic HBV and HCV infections result in cirrhosis in ~ 15% of subjects in 25-30 years, with HCC arising in ~1% of subjects with cirrhosis. • Non-viral cirrhosis is also a risk factor for HCC. ...
Topic 6 Checkpoint Answers File
Topic 6 Checkpoint Answers File

... Q6.7 Write a definition for each of the four types of immunity: passive natural immunity, active natural immunity, active artificial immunity and passive artificial immunity. Passive natural immunity occurs when antibodies pass from a mother to baby either across the placenta before birth, or via b ...
5/30/2012
5/30/2012

... • Most common chronic bloodborne infection in U.S. • 2.7 – 3.9 million Americans have chronic HCV – 4 X more than either HBV or HIV • Most chronic HCV carriers are baby boomers – Born 1946 – 1964 – ~75% = unaware of infection Hepatitis C (HCV) • Most commonly spread by: – Blood contact (healthcare w ...
Ch14
Ch14

... are examples of prion-associated diseases. F  Viruses are capable of replication outside of a living cell. T  The term portal of entry refers to the process by which a pathogen enters the body. F  Some fungi are members of normal human microflora. F  All organisms cause infectious illness in hum ...
Bloodborne Pathogens
Bloodborne Pathogens

... Without treatment, a person could die from a simple infection ...
Bloodborne Pathogens & Standard Precautions
Bloodborne Pathogens & Standard Precautions

... Without treatment, a person could die from a simple infection ...
Post Vaccination Evaluation of Anti-HBsAg Antibody Titers
Post Vaccination Evaluation of Anti-HBsAg Antibody Titers

... observations indicate the need for evaluation of antibody titers among population groups which have potential risk of developing infection in future. According to the center for disease control and prevention’s (CDC) advisory committee on immunization practices (ACIP), HBV immunization is recommende ...
Viruses - mrkeay
Viruses - mrkeay

...  a microscopic organism consisting of genetic material (RNA or DNA) surrounded by a protein, lipid (fat), or glycoprotein coat.  Exists between living and non-living (lacks characteristics of six Kingdoms)  Parasitic existence Source: Medical News Today ...
403.3E1 Page 1 of 4 HEPATITIS B VACCINE INFORMATION AND
403.3E1 Page 1 of 4 HEPATITIS B VACCINE INFORMATION AND

... The Disease Hepatitis B is a viral infection caused by the Hepatitis B virus (HBV) which causes death in 1-2% of those infected. Most people with HBV recover completely, but approximately 5-10% become chronic carriers of the virus. Most of these people have no symptoms, but can continue to transmit ...
Word - Marion Independent School District
Word - Marion Independent School District

... for safety and effectiveness in large scale clinical trials. Approximately 90 percent of healthy people who receive two doses of the vaccine and a third dose as a booster achieve high levels of surface antibody (anti-HBs) and protection against the virus. ...
Papovavirus
Papovavirus

... – transcribed from the strand complementary to the strand used for early RNA transcription – transcribed from progeny, not parental genomes – transcribed in much greater amounts than early – encodes three structural proteins, by differential splicing ...
Infectious Disease
Infectious Disease

... – Interfere with the cellular processes of the bacteria – One antibiotic will kill many different kinds of bacteria – Examples: Penicillin, Amoxicillin ...
Disinfection and inactivation of viruses
Disinfection and inactivation of viruses

... virus replicates initially at the site of entry, but then enters the blood (viremia) or lymphatics and spreads throughout the body (e.g. Measles). Other viruses such as Rabies and Herpes Simplex may replicate locally initially, then enter nerve endings and travel up the axon to infect the central ne ...
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Hepatitis B



Hepatitis B is an infectious disease caused by the hepatitis B virus (HBV) which affects the liver. It can cause both acute and chronic infections. Many people have no symptoms during the initial infection. Some develop a rapid onset of sickness with vomiting, yellowish skin, feeling tired, dark urine and abdominal pain. Often these symptoms last a few weeks and rarely does the initial infection result in death. It may take 30 to 180 days for symptoms to begin. In those who get infected around the time of birth 90% develop chronic hepatitis B while less than 10% of those infected after the age of five do. Most of those with chronic disease have no symptoms; however, cirrhosis and liver cancer may eventually develop. These complications results in the death of 15 to 25% of those with chronic disease.The virus is transmitted by exposure to infectious blood or body fluids. Infection around the time of birth or from contact with other people's blood during childhood is the most frequent method by which hepatitis B is acquired in areas where the disease is common. In areas where the disease is rare, intravenous drug use and sexual intercourse are the most frequent routes of infection. Other risk factors include working in healthcare, blood transfusions, dialysis, living with an infected person, travel in countries where the infection rate is high, and living in an institution. Tattooing and acupuncture led to a significant number of cases in the 1980s; however, this has become less common with improved sterility. The hepatitis B viruses cannot be spread by holding hands, sharing eating utensils, kissing, hugging, coughing, sneezing, or breastfeeding. The infection can be diagnosed 30 to 60 days after exposure. Diagnosis is typically by testing the blood for parts of the virus and for antibodies against the virus. It is one of five known hepatitis viruses: A, B, C, D, and E.The infection has been preventable by vaccination since 1982. Vaccination is recommended by the World Health Organization in the first day of life if possible. Two or three more doses are required at a later time for full effect. This vaccine works about 95% of the time. About 180 countries gave the vaccine as part of national programs as of 2006. It is also recommended that all blood be tested for hepatitis B before transfusion and condoms be used to prevent infection. During an initial infection, care is based on the symptoms that a person has. In those who develop chronic disease antiviral medication such as tenofovir or interferon maybe useful, however these drugs are expensive. Liver transplantation is sometimes used for cirrhosis.About a third of the world population has been infected at one point in their lives, including 240 million to 350 million who have chronic infections. Over 750,000 people die of hepatitis B each year. About 300,000 of these are due to liver cancer. The disease is now only common in East Asia and sub-Saharan Africa where between 5 and 10% of adults have chronic disease. Rates in Europe and North America are less than 1%. It was originally known as serum hepatitis. Research is looking to create foods that contain HBV vaccine. The disease may affect other great apes as well.
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