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tuberculosis from
tuberculosis from

... • positive TST with minimal abnormalities on the chest radiograph, such as an infiltrate with hilar lymphadenopathy or Ghon complex • Malaise, low-grade fever, erythema nodosum,or symptoms resulting from lymph node enlargement may occur after the development of delayed ...
Modelling the dynamics of West Nile Virus - FENOMEC
Modelling the dynamics of West Nile Virus - FENOMEC

... When an infected mosquito bites a bird, it transmits the virus; the birds may then develop sufficiently high viral titers during three to five days to infect another mosquito. The virus can also be passed via vertical transmission from a mosquito to its offspring (Baqar et al., 1993; Swayne et al., ...
Long-Term Care and Retirement Home Infection Control News
Long-Term Care and Retirement Home Infection Control News

... Dr. McGeer trained in internal medicine and infectious diseases at the University of Toronto, then completed a fellowship in hospital epidemiology at Yale New Haven Hospital in 1989/90. She is currently a member of the Canadian National Advisory Committee on Immunization, and the Infection Control S ...
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... a. Increased NO production which generate free radicals able to destroy the microorganism. b. Secretion of IL-8 which is chemotactic for lymphocytes and monocytes. 2- IFN-γ …. which helps in a. Macrophage activation for more phagocytosis, antigen presentation and microbial ...
Chagas Disease: the Silent Killer
Chagas Disease: the Silent Killer

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... handle up and down to release a mist of acid into the air. Carbolic acid, now more commonly known as phenol, is an organic compound with the formula C6H5OH. Lister recognised the antiseptic properties of phenol and used it during operations as well as cleaning surgical instruments and wounds with th ...
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... up with the blood loss transfusion of blood or blood products is unavoidable3. Approximately 90% of individuals infected with HCV are either asymptomatic or have only mild symptoms4,5. Almost 300 million individuals are infected with HBV, worldwide. Chronic carriers of HBV may have low level viremia ...
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Vaccinations Before and After Heart Transplant

... Vaccination is a very important way to protect the body from infection. Here are a few reasons why it is important to make sure your vaccines are up-to-date before your transplant. 1. Patients with heart failure and heart transplant recipients are at high risk for getting severe influenza (the “flu ...
Common transfusion-transmissible infections in a Hospital
Common transfusion-transmissible infections in a Hospital

... The vast majority of our subjects were males (99.9%) and this is similar to what was reported by Alcantara, as 99.6% of their subjects were males [9]. This is understandable and has many corresponding factors to it as the majority of Saudi females have concerns regarding developing anemia and donati ...
Diseases of Small Poultry Flocks - Poultry U
Diseases of Small Poultry Flocks - Poultry U

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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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