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Influenza And Antidemic Change

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Each winter season brings the horrid infectious disease, influenza also commonly known as “the flu.” Just in the past week, over 250 cases of positive specimens were gathered with it being the highest week in the year of 2017. Influenza has already been in full force this winter, with many people around Australia falling ill. Everyone in their lifetime suffers from the nasty flu as sometime in their life, but for some, it’s a critical and complicated disease. In the selected years of 2006, 2010 and 2015, influenza was one of the leading causes of death. Influenza and pneumonia are at rank 12, with 2015 having at least 3,402 deaths, more than breast cancer. “There has been a total of 12, 360 laboratories confirmed notifications of influenza …show more content…

Antigenic drift is the sudden significant change or a new subtype of the disease, which is caused by point mutations within the cell and could result in a pandemic. These small changes within the cells continually happen over time as the virus replicated. These genetic changes usually produce viruses that are pretty closely related, with them having the same antigenic properties and immune system response. Antigenic shift is like the antigenic drift, but is caused by the exchange of gene segments. When shift happens, most people have little or no protection against the new virus. While influenza viruses are changing by antigenic drift all the time, the antigenic shift occurs only occasionally. Type A viruses undergo both kinds of changes; influenza type B viruses change only by the more gradual process of antigenic drift. Shift and drift can be evident in the statistics Australia faced in 1907 to 2000. Australia faced an influenza pandemic of 1918 to 1919, which brought more deaths than World War One. “It has been recorded that the numbers are between 20 and 40 million people, with it being the most devastating epidemic recorded in world history” (Appendix, statistic 2). “Pneumonia and influenza were the major contributors in 1907 but by 2000 were clearly outranked by COPD, whose rates increased markedly over the 30 years after 1950.” Since then, influenza numbers have fallen rapidly by an average of 99% since 1907” (Appendix, statistic 2). Therefore, influenza has changed over the decades, with sift and drift being the source of that

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