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Virus
An invisible organism enters your body. It penetrates into your tissues and then takes over the machinery in your own cells to make more copies of itself. This tiny infiltrator works silently, producing thousands of these clones that fill up the cell and cause it to explode. The clones mercilessly continue the process of invading, taking over and destroying cells. The result might be a minor inconvenience to you as the host, or it could result in a slow or rapid death. It depends only on which variant of this unwanted infiltrator overcomes your body’s defenses. There are cures to wipe out some types of these invisible intruders, but others are so difficult to eradicate or so readily adaptable, that the world’s greatest scientists have failed to defeat them. This isn’t the beginning of a medical thriller; it is simply a description of the common viruses that surround and infect us every day.
From the common cold to cancers, viruses plague humans with disease and misery. Some of them, such as influenza, adapt and evolve as quickly as defenses are built against them. Some get into cells and start replication immediately. Others lie dormant like opportunistic predators until conditions are ripe for them to propagate. The herpes viruses can do this over and over again. They hide in nerve tissue until prompted to erupt leaving painful ulcers as host tissue is destroyed. Human papilloma virus—HPV--causes genital warts and predisposes its victims to cervical cancer. Likewise, hepatitis viruses, especially hepatitis C can leave a patient vulnerable to liver cancer. Other cancers in humans are also known to be caused by viruses. It is tempting to assign human traits to viruses thinking of them as contriving and evil. But, they...
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... enter your body. Some vaccines, such as those for polio, measles and smallpox have been highly effective in removing the causative pathogens from the population. Others viruses including HIV, influenza and those that cause the common cold, are able to change enough to evade recognition by the responding antibodies as to render current vaccines useless.
Anti-viral drugs search for and destroy viruses by recognizing unique components of the capsid or envelope. The herpes viruses can be somewhat controlled, but not eliminated in this manner. Infections are shorter, but the virus still lies in wait in the nerve cells to re-emerge on another day. HIV drug regimens have lengthened the life expectancy of patients infected with the human immunodeficiency virus by suppressing multiplication inside the host.
Viruses prove that truth is stranger than (science) fiction.
Everyday researchers have proposed new methods of how to control the HIV virus from turning into AIDS. A combination of effective HIV medicines help stop the formation of new copies of HIV as it reproduces in your body. This technique helps to keep your CD-4 cell count up and your viral load down. CD-4 cells are one type of immune cells that assist to fight off the virus, the higher your count the stronger your immune system (Nakashima 77). Whereas, your viral load is a measure of HIV in your blood and your treatment goal is to have the lowest viral load possible. People with higher viral loads tend to progress to AIDS and become sick sooner than those with lower viral loads (Nakashima 80). Successful HIV medications can prevent other infections common with AIDS and can help you live longer.
The idea behind vaccines is to provide the body with just enough of the disease-causing substance to trick the body into producing antibodies against it. By injecting weak or dead infectious agents through the skin, it’s believed that the body will create the appropriate immune defense. Infants come into the world with antibodies they have gotten from their mother through the placenta. Infants who are breastfed continue to receive many important antibodies in the colostrum (the thick, yellowish premilk that is secreted during the first few days after a woman gives birth) and breast milk. During the first year of life, the immunity an infant gets from its mother at birth wears off. To help boost the fading ability to fight certain diseases, vaccines are given. Once the antibodies are produced, they stay around, protecting the child against the disease they were designed to fight.
...Although these were initially set to prevent infectious diseases it has been found that there is also prevention of autoimmune diseases, birth control and also cancer therapy. While vaccines provide a proficient means of preventing diseases and improving public health it doesn’t mean all are essential to a healthy life, some do more damage if a sufficient immune system is not present. How the vaccine is formulated and distributed is important to study and follow up on to be certain it is in the best interest of your body to receive the vaccine. Vaccinations will remain present, but it is our choice as individuals to know what they are composed of and how they are administered. Immunizations should be valued and taken seriously, this advancement in technology came at a high speed, which means flaws, and errors will exist, whether we notice them now or in the future.
It is necessary in order to understand Avian Flu's impacts on society to first understand what H5N1 influenza is. Like any virus, influenza viruses cannot reproduce on their own the way bacteria can. Technically, viruses aren’t even alive because in order for them to reproduce, they must take over the living cell of another organism. This makes all viral diseases notoriously hard to cure because modern research has yet to reveal a medication or procedure that can kill a virus without killing its host. The best medications that we currently have available to treat viruses can only prevent the virus fro...
Vaccines are made to mimic infections. For example, the influenza vaccine mimics the virus, but is a weakened form of it, making it difficult for the virus to reproduce or cause any serious damage. When the vaccine enters the body, T cells and B cells from the immune system begin to attack it and defend the rest of the body from the weakened virus. Not only are the T and B cells able to rid the body of the virus, some of the cells become memory cells. The memory cells then “teach” other cells how to fight of the virus. Because of this, when the body becomes infected with the real virus, the cells will know exactly how to protect the body from the virus (U.S. Department of Health and Human Services,
There are many virus’ and diseases known to mankind that have existed for many centuries. Some have cures whereas others sadly do not. Some may show symptoms and again others may not.
Virus- An infectious agent found in virtually all life forms, including humans, animals, plants, fungi, and bacteria. Viruses touch us every day through water, food, physical contact, blood, animals, or even, the air you breathe. All though most are harmless there are some that...
From as early as we know epidemics and plagues have drastically affected mankind all over the world. With no regard to race, creed, religion, gender, social class or economic status, they have ravaged and devastated the human race across all continents. Small Pox, one these voracious and merciless diseases, has had its hand in this devastation. The highly contagious disease is responsible for the death of hundreds of millions of people over thousands of years with three hundred million of those deaths, coming from the 20th century alone (Carrell, 2004).
Until the global outbreak of the Ebola virus in 2014, I heard of a real-life present-day killer virus. Of course, I learned about the Black Plague that occurred centuries ago killing millions of people. But in the modern day, no. It was horrifying. This paper will explore the origins, types, causes/effects, and what is being done to fight the spread of the Ebola virus – the Black Plague of 2014.
detected or destroyed by the. It is capable of destroying millions of people. without war or violence. This thing is AIDS caused by the virus. HIV -1.
To fully understand the reasoning, however fraudulent, behind the anti-vaccination movement, one must first know what a vaccine is and how it works. A typical vaccine works by introducing a small, weakened version of the target virus into the system of the vaccine receiver. The receiver then fights off the inferior version, preparing the white blood cells for future attacks. In theory, this creates an immunity to the target virus. Vaccines have been proven to be the most effective method in preventing viral diseases.
Acquired Immunodeficiency Syndrome (AIDS) first came to light in 1981. There has been a long and arduous global effort on the prevention of HIV/AIDS. HIV is a virus that is spread through body fluids that affect the specific T-cells of the immune system. Without treatment HIV infection leads to AIDS and there is no cure for AIDS. HIV infection can be controlled and the importance of primary pre...
Malicious code is a real danger to modern systems. Most systems nowadays do not work in isolation; they are more likely to be connected to other systems and sometimes they can even be dependent on them. Therefore an attack on one of the systems in the network is a potential attacking attempt to any other systems, with which it is interacting. Therefore, it is inevitable for any networked or Internet-connected computers to deal with malicious code attacks at some point. Businesses lose billions of dollars each year because of malicious code attacks. Responding to the attack and restoring all the data on the computers is a time-consuming and expensive task. It is a much better practice to try preventing it through organizing and maintaining effective defenses. However, it is important to keep in mind that there is no one general solution that can help to prevent all the attacks. Attackers are constantly looking for new ways to take advantage of systems’ vulnerabilities and find new ones. That’s why organizations have to not only defend themselves against existing attack methods, but also try to predict and prevent new attacking techniques. It means that computer and network security is a never-ending challenge and expense.
Since the first cases of the Human Immunodeficiency Virus (HIV) in 1981, over 36 million people have died from the disease’s progression from HIV to Acquired Immunodeficiency Syndrome (AIDS). According to the U.S. Department of Health and Human Services, scientists generally accept that the HIV virus started in a specific type of chimpanzee in Western Africa. HIV weakens the patient’s immune system by “destroying important cells that fight disease and infection.” After HIV is acquired, progresses, and grows it turns into a much more lethal stage, AIDS. Because their immune system is heavily damaged and virtually incompetent, AIDS patients is increasingly susceptible to other infections. If medical attention is not provided for an AIDS victim, they will almost certainly die (“What Is HIV/AIDS?”). In this recent and ongoing AIDS epidemic, about 75 million people have been infected with the virus, causing 36 million deaths; but there is hope because organizations like the Samaritan’s Purse are doing their best to combat the disease.
Human technology is constantly evolving, and with it society and medicine must follow suit. Every year, new breakthroughs in the field of medicine award mankind with a few more years of immortality. Scientists are constantly working to solve problems that once posed the threat of imminent death. Over two hundred years ago, the vaccine for Smallpox—one of the world’s deadliest killers—was discovered in 1796 (“CDC”). Since then, humans have been steadily eradicating every threat to individual health. Only last month, December of 2011, researchers from the University of Western Ontario revealed a new HIV vaccine that has been approved for human te...