Influenza Virus Summary

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

Every year, millions of people start talking about the influenza virus and getting their vaccines as the flu season approaches, which starts around the October-November period and reaches its peak between December and March. Therefore, public health officials around the world- and in the U.S in particular- are constantly challenged by properly preparing for the annual influenza dilemma, given that this viruses, and other respiratory viruses, are a serious health threat to the U.S population and the world as a whole. Furthermore, what makes the influenza virus even more challenging to control is that it can mutate rapidly and reassort to form new strains, having the ability to reside in multiple animal hosts. In fact, many scientists and researchers have been doing in-depth intensive research so as to understand the mechanism behind this unique characteristic of the virus, try to find new ways to control it, and explore different areas of protection and vaccination.

According to the Centers for Disease Control and Prevention, “It's estimated that 90 percent of seasonal flu-related deaths and more than 60 percent of seasonal flu-related hospitalizations in the United States each year occur in people 65 years and older “ (2011).The CDC advises that the best way to prevent and control the spread of influenza each year is by the use of vaccinnations. In effort to control and prevent influenza epidemics, the CDC uses the epidemiological process to predict the strain of the virus that will be most relevant to the population and this data is used to formulate influenza vaccinations (Centers for Disease Control and Prevention, 2011).

Influenza, also known as the flu, is a highly contagious viral disease that affects the upper respiratory tract. Flu season typically lasts between the months of October and April. Signs and symptoms include fever, cough, sore throat, muscle aches, fatigue, runny nose, and headaches. Individuals that are at a high risk of getting the flu include: children under the age of two, persons 65 and older, pregnant women, and persons with a chronic illness. Environment factors can also increase the risk of contracting the flu. Complications can include pneumonia, ear and sinus infections, dehydration, or worsening of chronic medical conditions. The influenza virus could eventually lead to longer hospitalization or death if left untreated. According to the CDC, the best way to prevent the flu is by getting vaccinated each year. Compliance with the vaccination is also important in preventing the flu.

Influenza is not a deadly virus and does have a vaccination. One of the three types of influenza, type C, “type C infections cause a mild respiratory illness and are not thought to cause epidemics” (Types of Influenza Viruses). The other two types of influenza viruses type“ A and B viruses cause seasonal epidemics” and happen mostly when winter hits (Types of Influenza

Influenza, an innocent little virus that annually comes and goes, has always been a part of people’s lives. Knowing this, one would not believe that it has caused not one, not two, but three pandemics and is on its way to causing a fourth! The Spanish flu of 1918, the Asian flu of 1957, and the Hong Kong

Background & Audience Relevance: Influenza is an infection that can affect anyone around the world. Am quite sure almost everyone, if not all of us, have been infected with influenza at some point in our lives.

According to the Centers for Disease Control and Prevention (CDC, 2013) national healthcare disparities report for 2010, influenza and pneumonia are ranked within the top ten major causes of death in the United States. The influenza viruses that will be discussed throughout this case study include the human influenza viruses: A and B. These viruses are responsible for seasonal epidemics during the fall and winter around the globe in temperate environments. Historically influenza outbreaks have had a seasonal distribution and characteristic time course although according to the CDC (2017) factors influencing the extent and severity of an outbreak are less clear. Generally, there are two or three different influenza strains typically circulating concurrently in any given

The last few days of summer are upon us, the leaves are beginning to change and it is once again fall in East Tennessee. While many are beginning to enjoy a relaxing break before the stresses of winter and the holidays, healthcare providers are bracing for the rush. The rush I speak of is that of doctor’s offices which are over run with those complaining of fevers, aches, and chills. Influenza season begins as early as August and can run as long as in to late March. Those affected by the virus can range from infants to the elderly, but most complications occur in those over 65, including death. According to the World Health Organization, the number of elderly persons is expected to increase from 600 million currently to over 2 billion worldwide by 2050. (WHO, 2015) Due to the rapid increase of this age group in the upcoming years, the need to prevent and establish treatment for illnesses that have the potential to be fatal in this population is a top priority. Greater risks of mortality in those over 65 who contract influenza can be attributed to several factors including: the elderly’s decline in immunity response, the inability of the elderly’s body to fully recover from infection, and finally, the long term complications of influenza among those who are already compromised.

The seasonal influenza vaccine has been in existence for a numerous amount of decades, therefore so has the gradual implementation of the vaccination. Through recent studies, the break through knowledge of the importance of enforcing the requirement of this vaccine for children has acquired increasing acceptance statistics. During the many outbreaks of different classified strands of avian influenza, the health care community has been unable to retain the virus and alleviate patients efficiently. However current tallies have shown that the system for controlling these outbreaks have improved lowering the mortality rate profoundly. (BioScience Trends, 2013).

Avian influenza is a disease that has been wreaking havoc on human populations since the 16th century. With the recent outbreak in 1997 of a new H5N1 avian flu subtype, the world has begun preparing for a pandemic by looking upon its past affects. In the 20th Century, the world witnessed three pandemics in the years of 1918, 1957, and 1968. In 1918 no vaccine, antibiotic, or clear recognition of the disease was known. Killing over 40 million in less than a year, the H1N1 strain ingrained a deep and lasting fear of the virus throughout the world. Though 1957 and 1968 brought on milder pandemics, they still killed an estimated 3 million people and presented a new

Influenza A (H1N1) is a virus with multiple strains that causes human influenza. The H1N1 are endemic in humans and causes influenza-like illness during the flu season. In 2009, when the influenza virus emerged, it highlighted the importance of having infrastructures to conduct research. This would allow public health officials to manage patients for emerging viruses. Much of the surveillance systems for influenza are laboratory-based or anti-viral resistance monitoring. The lab base focuses on variant virus strains for vaccination. Anti-viral resistance includes clinical data on hospital or outpatients with no follow up. Much of the data from the previous cohort studies on the clinical outcomes and prognostic factors of influenza-infected

Influenza viruses are unique. They have the ability to avoid host immunity, therefore causing annual reoccurring epidemics of disease, and sometimes, major worldwide pandemics. The recognition of the variability in antigenic characteristics of influenza strains led to the establishment of a global Influenza Surveillance Network by the World Health Organization. The network monitors changes in viruses that cause outbreaks of influenza throughout the year all around the world. This article aims to explain the difference in epidemiology between influenza strains A and B, and how they are related to previous viruses.

As influenza is a global virus, surveillance is carried out at several levels: globally by the WHO’s Global Influenza Programme (GIP); regionally, for example European surveillance; and nationally by each country's own surveillance systems (Johnson et al., 2010; WHO, 2017c). Various other global data sharing websites, for example FluNet and FluID provide up-to-date global surveillance information, allowing national public health departments to monitor the global situation and predict possible spread to, and impact on, their own country (WHO, 2017a). These systems, however, are dependent upon adequate national reporting and international communication

H1N1 is a new influenza virus causing illness in people. This virus was first detected in residents of the United States in April of 2009. This virus is contagious and is spreading from person to person worldwide just as seasonal flu viruses spread. According to Up To Date (2009), the month of July in the United States contained 43,000 confirmed cases of H1N1 reported from 55 states and territories. The World Health Organization (WHO) raised its pandemic alert level to the highest level, phase 6. The characteristics of pandemics are their rapid spread to all parts of the world. According to American Medical