SIR Model of Ebola On March 2014‚ the epidemic of Ebola virus disease was detected in West Africa. The outbreak began in Guinea on December 2013‚ but was not detected until just this March‚ when it had already spread to several other countries like Liberia‚ Nigeria and Senegal. The Ebola virus can cause a fatality rate up till 90%‚ however the fatality rate in the current outbreak is closer to 50%. On August 2014‚ the World Health Organization (WHO) declared the current outbreak of Ebola as a Public
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Chapter 1 – The Problem Introduction Dengue fever‚ also known as breakbone fever‚ is a mosquito-borne tropical disease caused by the dengue virus. Dengue becomes a major international public health concern. Dengue is found in tropical and sub-tropical regions around the world‚ predominantly in urban and semi-urban area. The World Health Organization (WHO) estimates there may be 50-100 million dengue infections globally every year‚ with two-fifths of the world population‚ or 2.5 billion people‚
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A. Trachoma This is an infectious disease caused by the bacterium “Chlamydia trachomatis”. The infection causes the inner surface of the eyelids to become rough leading to pain in the eye‚ breakdown of the cornea and possible blindness. Untreated‚ repeated trachoma infections result in entropion - a painful form of permanent blindness when the eyelids turn inward‚ causing the eyelashes to scratch the cornea. Children are the most susceptible to infection due to their tendency to easily get dirty
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Using the numbers language is the best way to estimate how threatening and common this virus can be. Epidemiological studies have reported a total of 44 countries which had Zika outbreaks from 2007 to 5 February 2016. This includes 33 countries that reported transmission in between 2015 and 2016. The most affected countries are Brazil with up to 1‚482‚701 cases reported since the outbreak began and Colombia with 20‚297 cases reported (up to 23 January 2016). Since the country’s first cases were
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Termites and other wood-boring bugs like carpenter ants do their dirty work behind the walls of our homes. Although we might see the swarmers‚ or reproductive termites‚ flying around during mating season‚ we rarely see the workers chomping away 24 hours a day‚ 7 days a week. Normally‚ we only know we have a termite problem when we see hollows or small‚ black holes in sheetrock or buckling wood in window or door frames. Aside from some preventative measures we can take to make our houses less appealing
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The figure from the article Updated Brain Map Identifies Nearly 100 New Regions‚ by Carl Zimmer‚ is not only unhelpful‚ but does not convey anything meaningful other than the great quantity of regions discovered. The purpose of the article is to report on a group of scientists’ discovery and their revised mapping of the brain with new regions. The image displays a multitude of regions that are seemingly random as neither the article nor a legend explains the significance of the borders drawn on the
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ENTO 322-700 Discussion Article ID: 1c What is the hypothesis being tested by this research? [Reframe the primary question to be answered as a hypothesis if there is no direct hypothesis stated] The hypothesis being tested by this research was to see if a $20 device called a GAT could lure male mosquitos to a trap. If the mosquitos can be lured then researchers will be able to monitor them and sterilize them making it easier to monitor the population. What general methods/approaches are used in
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Case Study 97 1. Sickle cell disease is a group of disorders that affects hemoglobin‚ the molecule in red blood cells that delivers oxygen to cells throughout the body. People with this disorder have atypical hemoglobin molecules called hemoglobin S‚ which can distort red blood cells into a sickle‚ or crescent‚ shape. SCD affects millions of people worldwide‚ particularly those with African‚ Spanish‚ Mediterranean‚ and Indian ancestry. Some 120‚000 infants are born with SCD every year worldwide
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Yellow fever is arguably one of the world’s most dangerous infectious diseases‚ infecting 200‚000 and killing 30‚000 each year since the seventeenth century. While 90% of cases occur in Africa‚ the disease has made its way into the western hemisphere through the slave trade. As seen in the Molly Caldwell Crosby’s book The American Plague‚ yellow fever played an incredible role in shaping America. In the broader context of American history‚ the arrival of yellow fever shows the negative repercussions
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Vaccines impact everyone’s life at one point or another in the United States. Vaccinations were created to rid the world of terrible diseases‚ but concerns now exist stating that there is a link between these vaccines and autism spectrum disorder. Some individuals go further and believe that vaccines like the Measles‚ Mumps‚ and Rubella vaccine cause children to become autistic. Parents now have to decide whether or not to vaccinate their children‚ a decision that could eventually mean life or death
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