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PPT
PPT

... Type 1 = school attendees, and Type 2 = others The effect of intervention is assessed by their reduction of R. Reduce the number of types of infective that we need to keep track of by attributing infections as follows: Attribute to an infective A the individuals she infects in other households AND a ...
Stochastic Model of the Potential Spread of Highly Pathogenic Avian
Stochastic Model of the Potential Spread of Highly Pathogenic Avian

... (1) A visitor comes to the index farm. This event is simulated by a Bernoulli trial which probability of success is represented by the daily chance of that specific visitor coming to the farm (flock frequency/49; as an average growout period would be of 49 days). (2) The visitor contacts infected bi ...
What you need to know about vaccinations
What you need to know about vaccinations

... children.24 It is spread mainly by airborne droplets of moisture coughed out by an infected person, or by touching items contaminated by such droplets.24 It is contagious for several days before and after the rash develops. 24 Symptoms The infected child first develops a fever, runny nose, hacking c ...
Zika Medical Information
Zika Medical Information

... January 17, 2016. Pan American Health Organization • www.paho.org • © PAHO/WHO, 2016 ...
Travel-Related Influenza A/H1N1 Infection at a Rock Festival in
Travel-Related Influenza A/H1N1 Infection at a Rock Festival in

... in inpatients suffering fever, this possible coinfection would probably not have been recognized. The positive nasal swab for influenza A/H1N1 virus in our case may account for a nasal carriage in a healthy carrier for influenza. Indeed, in a recent investigation of an influenza A/H1N1 outbreak in Fran ...
Tetanus Fact Sheet - El Paso County Public Health
Tetanus Fact Sheet - El Paso County Public Health

... Keeping up to date on tetanus vaccination is an important step in preventing infection. During an emergency, tetanus is a concern for persons with both open and closed wounds, and a tetanus vaccination is recommended for all residents or first responders who have not had a documented dose within the ...
Toxoplasma - Worms and Germs
Toxoplasma - Worms and Germs

... milk of sheep, goats, cows, and sometimes chicken eggs. However, tachyzoites are killed relatively easily by pasteurization, and uncommonly survive gastric digestion, although this may be more of a concern in infants who have lower concentrations of peptic enzymes. Any kind of cooking will kill tach ...
7.3 Search for microbes – Further questions and answers Q1. Bk
7.3 Search for microbes – Further questions and answers Q1. Bk

... The list is reviewed regularly. Some examples of notifiable diseases are HIV, hepatitis B, hepatitis C, typhoid, cholera, Ross River fever, malaria and syphilis. The management of patients suffering from a notifiable disease depends on the kind of pathogen involved. For example, if the disease is ea ...
Neonatal calf diarrhea Neonatal calf diarrhea (NCD), also known as
Neonatal calf diarrhea Neonatal calf diarrhea (NCD), also known as

... disease affecting the newborn calf.The most critical period is in the first few days following birth of the calf.Greatest losses occur when calves are kept in close confinement, where the opportunity for transmission of the causative agents of NCD is enhanced by their build-up in the environment. Th ...
Cell-to-cell spread of HIV permits ongoing replication
Cell-to-cell spread of HIV permits ongoing replication

... same properties in vivo, it may have adverse consequences for the immune system11–13, lead to therapy failure in individuals with risk factors14, and potentially contribute to viral persistence and hence be a barrier to curing HIV infection. Current antiretroviral therapy (ART) does not cure HIV inf ...
Do you have viruses and bacteria covered?
Do you have viruses and bacteria covered?

... Titanium 5 + PH-M — proven effective and safe at every stage of production Evaluated under U.S. Department of Agriculture requirements, Titanium 5 + PH-M was proven safe and effective for cattle at all stages of production, with no interference between the viral and bacterial components of the vacc ...
Employee Training Quiz - Workplace Bloodborne Pathogens
Employee Training Quiz - Workplace Bloodborne Pathogens

... 17. Hand washing is an important part of disease prevention. True or False 18. Contaminated waste should immediately be placed in the nearest wastebasket. ...
a case report - PharmacologyOnLine
a case report - PharmacologyOnLine

... diagnosis of Varicella is primarily clinical with typical more than 90% of people in the United States have early prodromal symptoms and then the antibody by age 10 years. Prior to 2001, there were characteristic rash and oral cavity sores. more cases of chickenpox than any other noticeable Confirma ...
The Immune Response in Measles: Virus Control, Clearance and
The Immune Response in Measles: Virus Control, Clearance and

... Therefore, the innate response does not include IRF-3-mediated induction of type I or III IFNs, but does include induction of a subset of NFκB- and inflammasome-associated cytokines and chemokines that are important for initiating the adaptive immune response. 3. Virus Clearance Most RNA viruses, in ...
Membranes - buechner
Membranes - buechner

... Name the different types of membranes & their locations in the body. LT9 State names & locations of the ventral cavities’ serous membranes. LT10 ...
Diabetic foot infection diagnosis and treatment workshop
Diabetic foot infection diagnosis and treatment workshop

... • Superficial diabetic foot infections are likely due to aerobic gram-positive cocci (including S. aureus, S. agalactiae, S. pyogenes, and coagulase-negative staphylococci). • Ulcers that are deep, chronically infected, and/or previously treated with antibiotics are more likely to be polymicrobial, ...
HIV
HIV

... Population Polymorphism HIV is a retrovirus Retroviruses use host cell RNA polymerase II to replicate their genome Pol II has a high error rate 1:2,000-10,000 HIV genome 9749 nucleotides Therefore EVERY new virus has at least one mutation! Every possible single mutation arises daily 1% of all possi ...
occupational exposure to bloodborne pathogens
occupational exposure to bloodborne pathogens

... Employees who have occupational exposure to bloodborne pathogens are covered by the Occupational Safety and Health Administration (OSHA) Bloodborne Pathogens Standard, the North Carolina Administrative Code, and this policy. “Occupational exposure” includes any reasonably anticipated skin, eye, muco ...
Orig Articles Aug pages 04 - South African Medical Journal
Orig Articles Aug pages 04 - South African Medical Journal

... one of few programmes examining the practical implications of therapy for public sector patients. With a national antiretroviral programme being planned, we elected to report our early observations so as to assist other South African institutions preparing for the national roll-out. Although the pro ...
RSV
RSV

... Your child may have been exposed to respiratory syncytial virus (also called RSV) while at child care. What is RSV? RSV is a common cause of respiratory illness among individuals in all age groups. Infection usually causes cold symptoms, but often in infants and younger children, RSV infection sprea ...
Full Text PDF
Full Text PDF

... Figure 1. Cryptococcal ulcerations of the skin due to the immune reconstitution syndrome in a HIV-1-positive man ed. This therapy led to a very rapid improvement. After four days of the treatment, gradual regression of the skin ulcers was observed and on the fifth day the patient stopped having high- ...
Summit County Public Health
Summit County Public Health

... Who gets norovirus infection? Anyone can become infected with these viruses. There are many different strains of norovirus, which makes it difficult for a person’s body to develop long lasting immunity. Therefore, norovirus illness can recur throughout a person’s lifetime. In addition, because of d ...
Overview of virus life cycle
Overview of virus life cycle

Association of Periodontal Disease with Cardiovascular Disease
Association of Periodontal Disease with Cardiovascular Disease

... Infectious Diseases to Develop • Etiologic agents come from outside host • Sufficient numbers must be present “infectious dose” • Host must be susceptible ...
characterization of isolated avian influenza virus
characterization of isolated avian influenza virus

... New epidemic of influenza strains arise every 1 to 2 years by the introduction of selected point mutations within two surface glycoproteins: HA and NA. The new variants are able to elude host defenses and there is, therefore, no lasting immunity against the virus, neither after natural infection nor ...
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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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