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medical science is one of humanity's
医学是人类的一部分

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greatest accomplishments through
通过最大的成就

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advances in modern medicine some
现代医学的一些进步

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diseases which are once death sentences
曾经死刑的疾病

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now have cures and some of them are
现在有治疗方法，其中一些是治愈方法

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simple but this isn't the case for all
虽然简单但并非如此

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diseases
疾病

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unfortunately medical science still has
不幸的是，医学科学仍然存在

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a lot of work to do let's take a look at
很多工作要做，让我们来看看

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five of the most notorious diseases that
五种最臭名昭着的疾病

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don't yet have cures it wouldn't be
还没有治愈它不会

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right to try to rank these by severity
有权尝试按严重程度对这些进行排名

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so for simplicity sake we'll go down the
所以为了简单起见，我们将继续下去

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list alphabetically at the top of our
按字母顺序排列在我们的顶部

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list is AIDS someone can only be
列表是艾滋病，只有一个人可以

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diagnosed with AIDS if they have first
如果他们有第一个就被诊断患有艾滋病

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been diagnosed with HIV which is a
被诊断出患有艾滋病病毒

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disease that can destroy one's immune
可以摧毁一个人免疫力的疾病

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system once their HIV has progressed to
系统一旦他们的艾滋病毒进展到

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the point where it begins to kill off a
它开始杀死一个点的地步

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significant amount of immune cells they
他们有大量的免疫细胞

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can be diagnosed with AIDS the symptoms
可以诊断出艾滋病的症状

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can take over a decade to manifest in
可能需要十多年才能体现出来

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some people and modern antiretroviral
一些人和现代抗逆转录病毒药物

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drugs have become sophisticated enough
药物变得足够复杂

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to keep HIV at bay hopefully delaying or
希望艾滋病病毒可以延迟或延迟

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preventing the advancement to AIDS until
防止艾滋病进展直到

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early 2019 only one person had been
 2019年初只有一个人去过

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cured of HIV now a second person has
现在第二个人已经治愈了艾滋病病毒

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been cured both patients received stem
治愈后两名患者都接受了干

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cell transplants that led to their
导致他们的细胞移植

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bodies being cured of AIDS doctors do
艾滋病医生正在治愈的尸体

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not yet feel comfortable strictly
还没觉得很舒服

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calling this a cure for the disease
称这是治愈这种疾病的方法

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however so more research needs to be
但是需要更多的研究

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done Alzheimer's disease is a
完成老年痴呆症是一种

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neurodegenerative disease that affects
神经退行性疾病，影响

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5.8 million people in the United States
美国有580万人

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alone the vast majority of patients are
绝大多数患者都是

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above the age of 65 with Alzheimer's
阿尔茨海默氏症患者年龄超过65岁

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your brain is affected by the build-up
你的大脑受到积聚的影响

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of amyloid plaques between neurons as
神经元之间的淀粉样蛋白斑块

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well as neurofibrillary tangles these
以及神经原纤维缠结这些

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tangles and plaques are insoluble and
缠结和斑块是不溶的

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lead to problems with memory cognitive
导致记忆认知问题

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abilities in behavior ultimately leading
行为能力最终领先

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to the diagnosis of dementia because of
因为痴呆症的诊断

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this Alzheimer's is often ranked between
这种阿尔茨海默氏症经常被排在之间

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the sixth and third leading causes of
第六和第三主要原因

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death in the United States
在美国死亡

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Ebola often makes the news when an
当埃博拉经常发布新闻时

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outbreak occurs and for good reason the
爆发发生，有充分理由

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disease is highly contagious despite
尽管如此，疾病仍具有高度传染性

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what many people believe he bola is not
许多人认为他不是

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waterborne or airborne that being said
据说是水上的或空中的

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it can spread rapidly through direct
它可以通过直接传播

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contact with infected people patients
与感染者接触的患者

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with Ebola will experience fevers and
与埃博拉将经历发烧和

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tense headaches aches all over fatigue
紧张的头疼疼痛

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and other unpleasant symptoms there is
和其他令人不快的症状

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not yet a cure for Ebola but these
目前还没有治愈埃博拉病毒的方法

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symptoms can be treated and it's best to
症状可以治疗，最好

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get treatment as soon as possible
尽快得到治疗

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because Ebola has a case fatality rate
因为埃博拉的病死率很高

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of 90% Parkinson's disease is a disorder
 90％帕金森病是一种疾病

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that affects your nervous system it's
这会影响你的神经系统

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symptoms progressively get worse over
症状逐渐恶化

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time often starting as a slight tremor
时间经常以轻微的震颤开始

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in one hand over time these tremors can
一方面随着时间的推移这些震颤可以

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spread and become much worse leading to
传播并变得更加糟糕导致

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the stiffening of body parts restricted
身体部位的僵硬受到限制

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movement and slurred speech research has
运动和言语研究含糊不清

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shown that some genetic factors can lead
表明一些遗传因素可以导致

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to an increased risk of Parkinson's but
帕金森症的风险增加但是

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the direct cause of the disease is still
这种疾病的直接原因仍然存在

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not known there is not yet a cure for
不知道还没有治愈方法

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Parkinson's but treatments can vary
帕金森症但治疗方法可能有所不同

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depending on severity in some cases
在某些情况下取决于严重程度

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medication will be prescribed to help
药物将被规定帮助

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mitigate the symptoms while some
一些人减轻症状

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patients undergo brain surgery in an
患者接受脑外科手术

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effort to regulate brain activity to
努力调节大脑活动

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combat symptoms schizophrenia is one of
战斗症状精神分裂症是其中之一

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the most serious and debilitating mental
最严重和最虚弱的心理

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health disorders patients with
健康障碍患者

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schizophrenia often experience vivid
精神分裂症经常体验生动

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hallucinations which can lead to
可能导致的幻觉

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delusional perceptions of reality they
妄想他们对现实的看法

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can also experience movement disorders
也可以经历运动障碍

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and troubles processing emotions
和麻烦处理情绪

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researchers believe that certain genetic
研究人员认为，某些遗传

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factors can increase the risk of
因素可以增加风险

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schizophrenia which would explain why it
精神分裂症，这将解释为什么

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often runs in families but they do not
经常在家庭中运行，但他们没有

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believe a single gene is responsible for
相信一个基因负责

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the disorder as such it isn't possible
这种疾病是不可能的

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for doctors to predict who will develop
让医生预测谁会发展

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schizophrenia antipsychotics can be
精神分裂症抗精神病药物可以

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administered to help mitigate the
管理，以帮助缓解

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symptoms but many patients require
症状，但许多患者需要

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focused specialized care throughout
专注于专业护理

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their lives
他们的生活

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