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Principles of Infectious Disease Epidemiology [M.Tevfik DORAK]
Principles of Infectious Disease Epidemiology [M.Tevfik DORAK]

... unnecessary (therefore not cost-effective) • If R0 > 1 then (on average) the pathogen will invade that population – implications: control measure necessary to prevent (delay) an epidemic ...
Chlamydia trachomatis
Chlamydia trachomatis

... (walking pneumonia) similar to those caused by Mycoplasma pneumoniae and Legionella pneumoniae. In addition it can cause a pharyngitis, bronchitis, sinusitis and possibly atherosclerosis. The organism was originally called the TWAR strain from the names of the two original isolates - Taiwan (TW-183) ...
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fever - NYCC SP-01

... disease of lymphoid tissue caused by malignant transformation of an uncertain progenitor cell to the pathognomonic Reed Sternberg cell. It can be present in localized or disseminated form. It has been postulated to be triggered by a virus. ...
Emerging Trends in Plasma-free Manufacturing of Recombinant
Emerging Trends in Plasma-free Manufacturing of Recombinant

... Alternative, non-mammalian cell system: -Advances in modulating the glycosylation patterns in certain yeast ...
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... samples of five potato varieties, Granola, Atlantik, Raja, Super John, Kalosi, and Masalle. Two simple, rapid, sensitive, reliable detection techniques of three virus are reported in the paper: they are DAS-ELISA and RT-PCR. Detection of all three viruses on positive control samples could be carried ...
Appendix B
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... contact with respiratory secretions, including saliva. Vaccination prevents mumps transmission. Workers are considered immune if they have had physician-diagnosed mumps, appropriate vaccination after their first birthday, or have been proven immune through testing. Persons born before 1957 may be co ...
Immune System
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... My first is in bright but not in light. My second in light but not in right. My third in up but not in at. My last in eat but not in hat. My whole a color you will find. Keep that idea clear in mind. ...
Association for Professionals in Infection Control and Epidemiology
Association for Professionals in Infection Control and Epidemiology

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Word format - Open Study at LSHTM
Word format - Open Study at LSHTM

... Feedback: Direct contact with an infected person via the skin, mucosa, bodily fluids, or vertical transmission such as from a mother to a child are all ways in which an infection can be transmitted. However, this is not the only way. How else might an infection be transmitted? b) Through the air ove ...
Symptomatic HIV Infection
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Animal model for study of human hepatitis viruses

... poor and levels of viremia were low in mice where the repopulation rate of the mouse liver with human hepatocyte was low.17,50 As shown in Figure 3, human albumin levels in mouse serum were significantly higher in mice in which measurable viremia developed (Hiraga et al. unpublished data). Recent st ...
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... This organism hard to grow in the laboratory required special media and growth of the organism in solid media required cell line culture to illustrate cytotoxicity of the organism. The simplest method for diagnosis by detection of the toxin in the stool by immunological testing (ELISA) Treatment: Me ...
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SARS: Epidemiology in Action

... (b) Severe Acute Respiratory Syndrome (SARS), which is a disease associated with fever and signs and symptoms of pneumonia or other respiratory illness, is transmitted from person to person predominantly by the aerosolized or droplet route, and, if spread in the population, would have severe public ...
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Vaccines - Blum Animal Hospital
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... "This reaction will either prevent infection or lessen the severity of infection and promote rapid recovery." This reaction will either prevent infection or lessen the severity of infection and promote rapid recovery. In other words, vaccination mimics or simulates the protection (immunity) that a p ...
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Pandemic Flu vs. Zika Virus – Comparison and Context
Pandemic Flu vs. Zika Virus – Comparison and Context

... then touching their own mouth or nose. on the virus to her newborn around the time of birth, but this is rare. – It is possible that Zika virus could be passed from a mother to her baby during pregnancy.  Through infected blood or sexual contact Note: Zika virus has also been detected in urine and ...
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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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