Influenza is caused by an RNA virus from the Orthomyxoviridae family (which consists of the genera influenza A, B, and C). The influenza virus is taken into account unstable, mainly thanks to the fact that the viral surface proteins, haemagglutinin and neuraminidase, are subject to antigenic evolution. New strains and variants are constantly emerging every year.
The influenza virus is transmitted from human to human mainly by droplet spread, although there have been cases of animal to human transmission. The incubation period is approximately 3 days, although nasal shedding will peak about 24-forty eight hours once onset of symptoms. Viral shedding starts within 24 hours before the onset of symptoms and continues for up to 5 days in healthy adults and a couple of weeks in immunocompromised patients. It has been shown that each influenza A and influenza B viruses will survive for twenty-four-forty eight hours on laborious, nonporous surfaces like stainless steel, and survive for less than eight-twelve hours on products such as tissues. Prevention, thus, focuses on smart personal hygiene throughout the flu season, like casting off tissues, hand laundry with soap and water or alcohol gels, avoidance of touching the eyes and other mucous membranes, cleaning commonly used surfaces and encouraging people to hide their mouth and nose when coughing or sneezing.
It's well documented that within the elderly, influenza vaccination might scale back the incidence of serological and clinical influenza. It's conjointly known that mortality related to each influenza and respiratory syncytial virus (RSV) circulation disproportionately affects elderly persons (over sixty five years old). Other classes of patients in danger are those with ast...
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...nated. The ability of flu vaccine to shield someone depends on varied factors, together with the age and health standing of the person being vaccinated, and conjointly the similarity or “match” between the viruses used to create the vaccine and people circulating in the community. If the viruses in the vaccine and the influenza viruses circulating within the community are closely matched, vaccine effectiveness is higher. If they are not closely matched, vaccine effectiveness can be reduced. However, it is vital to remember that even when the viruses are not closely matched, the vaccine can still defend several individuals and forestall flu-related complications. Such protection is possible because antibodies made in response to the vaccine will give some protection (referred to as cross-protection) against completely different however related influenza viruses.
“I made money rapidly,” Charles Sligh explained, “The demands for flowers frequently were so great that all the florists in this community exhausted their supply daily, and the prices of everything were very high then.”1 Along with florists, funeral directors, and orderlies were also making a killing during World War One. “The undertaker which was half a block away from me had pine boxes on the sidewalk, pilled high. Me and two of my friends would go down there and play on those boxes; it was like playing on the pyramids.”2 Although business was booming for these professions, it was not because of the war. It was the result of an unexpected killer that swept across the world claiming victims at an unprecedented rate.
The Influenza virus is a unique respiratory viral disease that can have serious economic and social disruption to society. The virus is airborne transmitted through droplets release by coughing or sneezing from an infected person or by touching infected surfaces. Symptoms range from mild to severe and may even result in death. People with the virus usually experience fever, headache, shivering, muscle pain and cough, which can lead to more severe respiratory illness such as pneumonia. People most susceptible to the flu virus are elderly individuals and young children as well as anyone whose health or immune system has been compromise. The most effective way to counteract the influenza virus is to get the flu vaccine which is available by shots or nasal spray before the flu season as well as practicing safe hygiene. (CDC, 2013)
Current influenza vaccines are about 70% to 90% effective in preventing influenza in healthy adults. Since the vaccines are made of dead fragments of influenza viruses, they cannot cause influenza. The strains of influenza that circulate change every year and therefore, it is necessary to make a new influenza vaccine annually. After vaccination, the body's immune system produces antib... ... middle of paper ... ...
Loo, Yueh-Ming and Michael Gale, Jr. “Influenza: Fatal Immunity and the 1918 Virus.” Nature 445 (2007): 267-268. 23 July. 2008 .
Influenza is a major public health problem which outbreaks all over the world. Resulting in considerable sickness and death rates. Furthermore, it is a highly infectious airborne disease and is caused by the influenza virus. Influenza is transmitted easily from one person to another person which has a great impact on society. When a member of society becomes sick, it is more prone to spread to other people. In the United States, every year between 5 to 20 percent of the population is affected by influenza. As a result of this, between 3,000 and 49,000 deaths have occurred per year (Biggerstaff et al., 2014). Therefore, the influenza vaccine is the most effective strategy to prevent influenza. This essay will examine two significant reasons for influenza vaccination which are the loss of workforce and economic burden as well as one effect regarding herd immunity.
Influenza is very contagious and spreads rapidly from person to person. Influenza causes worldwide yearly epidemics. According to World Health organization Influenza affects 5-15% world’s population and resulting in 500,000 deaths yearly. Ottenberg stated that, in United States, an average of 200,000 were hospitalized and 36,000 died each year from influenza complications. Influenza is the sixth leading cause of death among US adults and is related to 1 in 20 death in persons older than 65 years. Disease control and prevention estimates indicate that infections like H1N1 which is one of the types of influenza, have resulted in an estimated 42 to 86 million cases and 8520 to 17620 deaths. As I mentioned earlier that infections like influenza are very contagious, they can spread easily from hcw to Patient and back to hcw. The most efficient and effective method of preventing influenza infection is vaccination(The best way to prevent influenza is with annual vaccination).(Sullivan,2010) (Gregory,Tosh &Jacobson, 2005). Motivated by a desire to actively avoid illness Influenza may increase the risk for death in people with existing heart, lung, or circulation disorders. In fact, the higher than average number of winter deaths in people with heart disease may be due only to the occurrence of influenza during those months.Vaccination provides immunity to fight against infection.To increase resistance to harm by modifying the environment to minimize preventable illness (NEED TO CHANGE WORDING)
The influenza pandemic of 1918-1919 killed more people than the Great War, known today as World War I (WWI), at somewhere between twenty and forty million people. (1) Influenza is a virus that appeared in 1918 and caused a pandemic. It made an enormous impact that is still significant to the world today. It has pushed scientists to make advancements in the medicine and vaccination industry that continue to grow each and every day. Influenza may be a horrible thing, but without it we wouldn’t be where we are today.
“Selecting the Viruses in the Seasonal Influenza (Flu) Vaccine.” Centers for Disease Control and Prevention. USA.gov, 9 March 2011. Web. 19 Jan. 2010
Vaccines save us from being infected with viruses. They save approximately 2.5 million people from death every year. However, while they help save lives, vaccines still have both minor and severe side effects. This can result in nausea, severe sickness, and in rare cases, death. Every year, 3,000 to 4,500 people in the United States are hospitalized due to vaccine side effects. It is extremely important for all communities to be informed about the side effects of vaccines and what causes them. Also, the Centers for Disease Control and Prevention say that the influenza vaccine is only 48% effective, due to constant mutation of the virus (Scutti, 2017). This means, the influenza vaccine does not work on all
Swine flu is a disease that has placed a burden on humanity for many years. The virus of swine flu has a very intriguing history as well. Swine flu had originated from the first influenza pandemic in 1918. The actual swine flu virus had come from a pig in Iowa in 1931. Two years later a human strand of swine flu was found in London for the very first time. This was later followed by the Hong Kong flu pandemic in 1968 which had killed up to one million people worldwide. Many years after these pandemics had occurred, the first cases of swine flu were found in California and Texas in March of 2009. This pandemic killed 25,174 people who were infected with swine flu. A couple of months later, the United States and the United Kingdom began testing people for the swine flu and started vaccination programs. Swine flu has had a long history and has taken a large number of lives in the past with worldwide pandemics. As a result, countries like the United States started to take measures toward vaccination. The virus has many different ways of being transmitted, signs and symptoms, areas of the world it infects, and treatment plans.
...e flu are very similar to those of the regular flu. However concern arises, because the possibility of the virus creating greater complications is likely. To prevent one from contracting the swine flu, he or she should get vaccinated. The main difference between the regular flu vaccine and the H1N1 flu vaccine is the components of which these vaccines are composed of. One should make the decision to get the swine flu vaccine based on one’s age and current medical condition. It is highly recommended that children and people to the age of twenty-four years-old receive the swine flu vaccine, because they have weaker immunity levels. It is best to ask a doctor which decision is preferred. The goal of health professionals is to eliminate the H1N1 virus as a global health threat, and to allow it to become a mere virus that can be prevented by proper vaccinations.
The study was conducted to consider the outpatient burden. Most studies are done to provide results for hospitalizations and deaths. So, Matias & et al used a dummy variable approach to get the best model fit for each individual pathogen to include H1N1, H3N2, and Influenza B virus. Multiple regression linear models were used to compute the burden of mild outcomes due to these viruses. Results between 2001 and 2009 revealed 14.5 million visits to the physician, from individuals over 65 years of age due to Influenza. 1.7% were because of H1N1, 3.9% because of H3N2, and 4.1 % attributed to Influenza B. As have been noted, the study showed clear data on physicians visits due to the flu, which can be significantly reduced by following governmental recommendations, to get an Influenza vaccine prior to Influenza
The swine influenza or swine flu is a respiratory disease in pigs that is caused by the type A influenza viruses. These viruses are referred to as swine flu viruses but scientifically the main virus is called the swine triple reassortant (tr) H1N1 influenza virus. When the viruses infect humans they are called variant viruses. This infection has been caused in humans mainly by the H1N1v virus in the United States. The H1N1 virus originates in animals due to improper conditions and the food they ingest. The virus stays in latency form, thus harmless to the respective animal. The longer the animals survive the more likely the virus is to develop and strengthen making it immune to vaccines. The virus reproduced through the lytic cycle. The virus injects its own nucleic acids into a host cell and then they form a circle in the center of the cell. Rather than copying its own nucleic acids, the cell will copy the viral acids. The copies of viral acids then organize themselves as viruses inside of the cell. The membrane will eventually split leaving the viruses free to infect other cells.
The Flu was first founded in Seattle September, 1918. The avian flu can also be known as the “Bird Flu”. The bird flu is being passed around by migratory birds. It can be transmitted from birds to mammals and in some limited circumstances to humans. The flu will also be known as the H5N1 virus. The H5N1 virus has raised concerns about a potential human pandemic because its virulent (deadly; extremely dangerous) and it can evolve like other influenza viruses. As many other viruses and illnesses the flu can be a lot more deadlier. When you get the flu the lungs are severely harmed from infected cells called macrophages and T-cells. The virus can spread way beyond the lungs but generally do not. Many people catch the flu and think they have the common cold because of some of the same symptoms. But actually the flu can be more dangerous if you don’t treat it immediately.
Writing Committee of the WHO Consultation on Clinical Aspects of Pandemic (H1N1) 2009 Influenza. (2009) Medical Progress Clinical Aspects of Pandemic 2009 Influenza A (H1N1) Virus Infection