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Flu Virus Powerpoint Template

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Transcript: Influenza viruses continually change over time, usually by mutation (change in the viral RNA). This constant changing often enables the virus to evade the immune system of the host (humans, birds, and other animals) so that the host is susceptible to changing influenza virus infections throughout life. This process works as follows: A host infected with influenza virus develops antibodies against that virus; as the virus changes, the "first" antibody no longer recognizes the "newer" virus and infection can occur because the host does not recognize the new flu virus as a problem until the infection is well under way. The first antibody developed may, in some instances, provide partial protection against infection with a new influenza virus. Flu vaccine reduces the average person chance of catching it by up to 80% during the flu season. However, people who get vaccined one year aren’t protected from getting the flu the following year because the protection wears off and flu viruses change constantly. EPIDEMIOLOGY MICROBIAL AGENT FLU VIRUS FLU INTRO The flu can be determined by symptoms to the point where further testing is not needed. These symptoms are fever, headache, tiredness, dry cough, sore throat, congested nose, and muscle aches and stiffness. Other symptoms may be nasal discharge, shortness of breathe, wheezing, croupy cough, chills, fatigue, malaise, sweating, loss of apetite, vomiting, dizziness, and worsening of other illnesses such as asthma and/or heart failure. The flu usually begins abruptly, with a fever of 102- 106F. Adults usually have a lower temperature than a child. Other common symptoms include a flushed face, body aches, headache, nausea, and lack of energy. The fever typically last for a day or two but can last five days. Somewhere between the second and fourth day of the illness, the whole body symptoms should begin to subside, and the respiratory symptoms should begin to increase. The flu virus can settle anywhere in the respiratory system, producing symptoms of a cold, croup, sore throat, bronchiolitis, ear infections, or pneumonia. Symptoms should start to disappear around four to seven days. But the tiredness and coughs usually lasts for weeks after the illness is over CONTROL MEASURES SYMPTOMS PREVENTION A LOOK INSIDE In 1918 infectious diseases were beginning to be unraveled. Influenza is a highly infectious viral illness. The name “influenza” originated in 15th century Italy, from an epidemic attributed to “influence of the stars.” The first pandemic, or worldwide epidemic, that clearly fits the description of influenza was in 1580. At least four pandemics of influenza occurred in the 19th century, and three occurred in the 20th century. The pandemic of “Spanish” influenza in 1918–1919 caused an estimated 21 million deaths worldwide. The first pandemic of the 21st century occurred in 2009–2010.Smith, Andrews, and Laidlaw isolated influenza A virus in ferrets in 1933, and Francis isolated influenza B virus in 1936. In 1936, Burnet discovered that influenza virus could be grown in embryonated hens’ eggs. This led to the study of the characteristics of the virus and the development of inactivated vaccines. The protective efficacy of these inactivated vaccines was determined in the 1950s. The first live attenuated influenza vaccine was licensed in 2003 The Flu is the common named influenza which is a virus that attacks the respiratory system. The flu virus releases its genetic information into the cells nucleus to replicate itself. When the cell dies, those copies are released and they affect other cells throughout the rest of the body. With that happening the virus weakens the immune system. When your sick with the flu, your body builds up a defense by making antibodies against it. The flu virus spreads through air when a person coughs, sneezes, or speaks. Its important to treat the flu seriously because it can lead to other viruses such as pneumonia and other life-threatening complications. For the most part it appears in infants, senior citizens, and people with long term health problems. People with the flu may not know but they are actually contagious from a day before they feel sick. It would usually be one week for adults and two weeks for young kids. Anyone at any age can have serious complications with the flu but those at high risk are people over 50 years old, children between 6 months and 2 years, women more than 3 months pregnant the flu season, anyone living in a long-term care facility, and anyone with chronic heart, lung or kidney conditions, diabetes, or weakened immune system.

Flu Virus

Transcript: Flu By: Olivia Knight ( Influenza ) Flu How you get it You get the flu by a viruses spread through tiny droplets in the air that are released when a sick person sneezes, coughs, or blows their nose. You can get sick if you touch your nose, eyes, or mouth after you have touched something contaminated by the virus, for exaple a toy, countertop, or doorknob. Influenza vaccine. Influenza vaccines, also known as flu shots or flu jabs, are vaccines that protect against infection by influenza viruses. A new version of the vaccine is developed twice a year, as the influenza virus rapidly changes. Don't worry Flu When you cough it can be dry. Your whole body chills, dehydration, fatigue, fever, flushing, loss of appetite, body ache, or sweating Your nose is congested, runny nose, or sneezing Also can have chest pressure, head congestion, headache, nausea, shortness of breath, sore throat, or swollen lymph nodes. Sytopms that you have, when having the flu. Also Also can have chest pressure, head congestion, headache, nausea, shortness of breath, sore throat, or swollen lymph nodes. While it is possible for the flu itself to cause death due to serious breathing problems and severe dehydration Can you die? Double click to edit Pictures Influenza was discovered not by a direct study of the disease in humans, but rather from studies on animal diseases. In 1918, J.S. Koen, a veterinarian, observed a disease in pigs. How did we figure out what the flu was? Who discovered the flu? Influenza ( Flu ) was discovered by J.S. Koen in 1918, Koen was a veterinarian. How was it discovered Influenza was discovered not by a direct study of the disease in humans, but from studies on animal diseases (Pigs ). Credits Websites i used

Virus Powerpoint

Transcript: Infection of a bacterium by a bacteriophage with subsequent production of more phage particles and lysis, or dissolution, of the cell. The viruses responsible are commonly called virulent phages. Lytic infection is one of the two major bacteriophage-bacterium relationships, the other being lysogenic infection Hantavirus pulmonary syndrome (HPS) first gained wide attention in the U.S. in 1993, when a healthy, young Navajo man and his fiancée living in the Four Corners area of the United States died within days of developing shortness of breath. A few months later, health authorities isolated hantavirus from a deer mouse living in the home of one of the infected people. More than 600 people in the U.S. have now contracted HPS, and 36 percent have died from the disease, according to the Centers for Disease Control and Prevention. Conclusion Did you know there are over 320,000 different viruses that can infect humans every day that's outstanding but harmful to us. You could get really sick or die if your infected with a deadly virus viral lysogenic The Ebola Outbreak viral lytic infection is a viral mode of reproduction where it inserts its genome in the host's DNA, then remains dormant as time goes by. However, though it's dormant, it replicates itself by letting the host cell copy the virus' genetic material in cell division.If the host cell divides, the viral genome is also copied, therefore replicating itself without exerting much effort and exhibiting dormancy. Smallpox Ebola, is a viral hemorrhagic fever of humans and other primates caused by ebolaviruses. Signs and symptoms typically start between two days and three weeks after contracting the virus with a fever, sore throat, muscular pain, and headaches. Then, vomiting, diarrhea and rash usually follow, along with decreased function of the liver and kidneys. At this time, some people begin to bleed both internally and externally. The disease has a high risk of death, killing between 25 and 90 percent of those infected, with an average of about 50 percent.This is often due to low blood pressure from fluid loss, and typically follows six to sixteen days after symptoms appear. Smallpox is a contagious, disfiguring and often deadly disease that has affected humans for thousands of years. Naturally occurring smallpox was eradicated worldwide by 1980 the result of an unprecedented global immunization campaign Samples of smallpox virus have been kept for research purposes. This has led to concerns that smallpox could someday be used as a biological warfare agent No cure or treatment for smallpox exists. A vaccine can prevent smallpox, but the risk of the vaccine's side effects is too high to justify routine vaccination for people at low risk of exposure to the smallpox virus. There are plenty of virus around the world that can infect you in many ways you can get infected without you even knowing but there are vaccaines to cure and treat any virus some virus can't be treated so it's possiable that you can get infected with a deadly virus Hantavirus Influenza is a highly contagious viral infection of the nose, throat, and lungs that occurs most often in the late fall, winter, and early spring. It is a serious infection that affects between 5-20% of the US population annually. Each year, more than 200,000 individuals are hospitalized and 3,000-49,000 deaths occur from influenza-related complications.Common symptoms include fever (101ºF-102ºF), muscle/body aches, chills, tiredness, and sudden onset. Other symptoms may include a cough and/or sore throat and a runny or stuffy nose. Influenza frequently causes people to miss school and work but in some cases there are severe complications such as pneuonmia Influenza Virus PowerPoint

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