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Microbiology Lab Manual
Microbiology Lab Manual

... costing nearly 1 billion dollars. No one appears to develop immunity after contracting the disease. Often infected women show no obvious symptoms, while approximately 75% of men are symptomatic. In men the disease produces urethritis resulting in painful urination and a discharge from the urethra, s ...
UPPER respiratory lecture 2011 ped (2)
UPPER respiratory lecture 2011 ped (2)

... – Fever: This is usually slight or absent, but temperatures can reach 39.5°C in infants and young children. If present, fever typically lasts for only a few days. – Gastrointestinal symptoms: Symptoms such as nausea, vomiting, and diarrhea may occur in persons with influenza, especially in children. ...
Disease evolution - Brian O`Meara Lab
Disease evolution - Brian O`Meara Lab

... Red solid = anti-growth rate vaccine (slow parasite growth) Red dashed = anti-toxin immunity (make parasite less harmful w/o affecting transmission and growth rates) ...
Positive Sense RNA Viruses
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83K English class examination questions of infectious disease (A)
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... 15.Pathogens invade into the host and cause mild damage of the tissues.There are no clinical manifestations or only atypical symptoms and signs.But there are specific antibodies in the serum.This condition is called: A. To clear out pathogens. B. Latent infecton C. Carrier state. D. Covert infection ...
FTIR Spectroscopy in Host –Pathogen Interaction T. Grunert , M
FTIR Spectroscopy in Host –Pathogen Interaction T. Grunert , M

... gain novel insights into the host-pathogen interaction. Staphylococcus aureus frequently causes chronic and persistent infections in humans and animals. Since, loss of capsular polysaccharide expression was shown to be an important feature associated with S. aureus persistence, we developed a high-t ...
Useful Facts about TB Infection
Useful Facts about TB Infection

... • Wounds and skin sites that have been in contact with blood or body fluids should be washed with soap and water. • Mucous membranes should be flushed with water. • No evidence exists that using antiseptics for wound care reduces the risk of transmission but their use is not contraindicated. ...
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The immune response during hepatitis B virus infection

... of HBV infection and the vigour and breadth of the HBVspecific T-cell response has a causative effect has been difficult to demonstrate. CD8 T-cell deletion experiments performed in HBVinfected chimpanzees have provided strong support for the concept that CD8 T cells are the main cellular subset res ...
Bristol-Myers Squibb-Sponsored Partnering for Cure
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... could lead to cure in viral diseases, namely HIV, hepatitis B (HBV) and hepatitis C (HCV). Partnering for CureTM was launched by a faculty of independent virology experts with the shared goals of supporting breakthrough research and facilitating greater collaboration and knowledgesharing with the vi ...
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Infectious Disease and the Immune System Ch. 39
Infectious Disease and the Immune System Ch. 39

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Surgical Infections

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7-3.4 Notes

... 7-3.4 Explain the effects of disease on the major organs and body systems (including infectious diseases such as colds and flu, AIDS, and athlete’s foot and noninfectious diseases such as diabetes, Parkinson’s, and skin cancer). It is essential for students to know that a disease is a condition that ...
Equine Viral Arteritis
Equine Viral Arteritis

... Clinically normal horses housed within the primary perimeter may be permitted segregated exercise periods outside the perimeter. Precautions should be taken, and may include: • Exercise scheduled after general population’s exercise period to avoid potential virus transfer to unaffected horses/barns ...
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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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