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The HIV virus

2019-08-13 来源: 51Due教员组 类别: Paper范文

下面为大家整理一篇优秀的paper代写范文- The HIV virus,供大家参考学习,这篇论文讨论了艾滋病毒。HIV病毒作为一个全球性的重大公共卫生问题,通过破坏人体免疫系统,使感染者极易受到感染,最终导致艾滋病。艾滋病毒的症状因人而异,取决于疾病的不同阶段,包括早期、临床潜伏期和艾滋病。大多数艾滋病毒携带者在最初几周内更有可能经历感染,但仍有许多人直到后期才意识到这一点。有些人甚至多年没有任何症状,直到病情发展成艾滋病。目前还没有治愈HIV感染的方法。幸运的是,目前已有许多预防艾滋病毒的方法,在减缓艾滋病毒传播方面取得了可喜的成果。

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As a major global public health issue, HIV virus makes the infected individuals extremely vulnerable by destroying their body’s immune system and finally causes acquired immunodeficiency syndrome(AIDS) with high mortality rate (Lozano et al., 2012).Since the beginning of the HIV epidemic, there are more than 70 million individuals having been infected and about half of them have died due to HIV(Stein et al., 2016).The reported HIV new cases also  grow in recent data. By the end of 2015, a total of approximately 36.7million[34.0million -- 39.8million]individuals were being infected by HIV throughout the world, which was 2.7 million higher than the numbers estimated in 2012(World Health Organization, 2012).Around 2.7 million individuals became HIV-positive virus carriers in 2010(World Health Organization, 2012). In 2015, 1.1 million [0.94 million -- 1.3 million]individuals died from HIV and AIDS worldwide. In Australia, the annual number of new people being diagnosed with HIV increased by 10% in 2012 comparing to the numbers only one year ago(Australian Government Department of Health, 2014).

Unsafe sex behavior without a condom, sharing needles no matter for what purpose and newborns getting from their mothers (in some cases during childbirth or breastfeeding) are three common ways by which the HIV is spread. HIV could also be spread through oral sex and needle injuries in some but rare cases. In Australia, the majority of individuals with diagnosed HIV infection are males who have unprotected sexual activities with males, meanwhile, around 25% of those with diagnosed HIV infection were through the heterosexual relationships between men and women in 2012.

The symptoms of HIV are different from individual to individual and depending on the stages of illness including the early stage, the clinical latency stage and AIDS. Most individuals living with HIV are more likely to experience being infectious within the first few weeks, there are still many people unaware until later stages. Some individuals even do not have any symptoms for years until the illness progresses to AIDS. Within the first 14 to 28days after being infected initially, some individuals may have no symptoms at all or experience a flu-like symptoms including night sweats, fatigue, chills or muscle aches. However, if have had unprotected sex before, the only way to know for sure of diagnosed HIV is to see the doctor and get tested.

There is no cure for HIV infection so far. Fortunately, numbers of HIV prevention methods are available with promising results for slowing the spread of the HIV, such as keeping the safe sexual activities (like using condoms) and taking antiretroviral drugs. The antiretroviral drugs are introduced to help control the transmission of HIV virus so that the lives of HIV-infected and HIV-uninfected .

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