Resistant Strains of HIV essays

Resistant Strains of HIV essays You are coughing, sneezing, have a runny nose and your body aches. Most of us have had the flu and know exactly the symptoms I am speaking of. Well, what if you went to your doctor and were treated with antibiotics and such, but just didn't get well. Would you think twice about it? Would you wonder what was wrong with you? Or would you blow it off as a bad flu season? Stephen Marcus, a 25 year old male from Los Angeles, blew it off. He didn't think twice about it. Didn't really know any better. Stephen wasn't suffering from the flu, though. After three months of this "cold," as he called it, Stephen was finally diagnosed with HIV, the virus that causes AIDS. This isn't the worst of Stephen's story, though. After following the highly complex triple-therapy drug regimen, otherwise know as a "cocktail" for six months, Stephen's condition was not improving. He returned to his doctor only to find out that he had been exposed to a virus that was resistant to the now traditional drug cocktail therapy. According to the Journal of the American Medical Association, March 14, 2001, approximately 14% of newly infected people are infected by a strain of the virus that is already resistant to one or more of the antiretroviral drugs. Today I will educate you on the topic of HIV, more specifically, these drug resistant strains. I will begin by telling you what causes resistance to the antiretroviral drugs. I will then illustrate how these strains are effecting treatments of HIV patients, and will finish by informing you of the Center for Disease Controls plan to keep new infections from increasing in America. There are several ways resistant strains of HIV can form. Because the virus reproduces so rapidly mistakes, called mutations, are common. Most of these mutations during replication cause the virus particle to become so weak that it cant reproduce. Those mutated strains do not pose any harm. Other mutations, though, can make ...

Quantum Definition in Physics and Chemistry

Quantum Definition in Physics and Chemistry In physics and chemistry, a quantum is a discrete packet of energy or matter. The term quantum also means the minimum value of a physical property involved in an interaction. The plural of quantum is quanta. Key Takeaways: Quantum Definition In chemistry and physics, quantum refers to a single packet of matter or energy.In practical use, it refers to the minimum amount of energy required for a change or the minimum value of any physical property in an interaction.Quantum is the singular form of the word. Quanta is the plural form of the term. For example: the quantum of charge is the charge of an electron. Electric charge can only increase or decrease by discrete energy levels. So, there is no half-charge. A photon is a single quantum of light. Light and other electromagnetic energy is absorbed or emitted in quanta or packets. The word quantum comes from the Latin word quantus, which means how great. The word came into use before the year 1900, in reference to quantum satis in medicine, which means the amount which is sufficient. Misuse of Term The word quantum is often mis-used as an adjective to mean the opposite of its definition or in an inappropriate context. For example, the term quantum mysticism implies a correlation between quantum mechanics and parapsychology that has not been supported by empirical data. The phase quantum leap is used to suggest a large change, while the definition of quantum is that the change is the minimum amount possible.