Section Ⅱ LESSON 2 & LESSON 3
Period 1 单元词汇表
1．_______ vt.包含，容纳，装盛 2．________n．因素，要素 3．______adj.稀有的，罕见的，不常发生的 4．estimate vt.__________ 5．______vt.埋葬，安葬；埋藏 6．______vt.造成，引起，产生(问题、危险、困难等)n.(为画像、拍照等而摆的)姿势，姿态 7．__________n．(战争或疾病)爆发，突然发生 8．_______n．试验；审判，审理 9．___________vt.强调，使突出；在……之下画线 10．__________adj.彻底的，全面的，详尽的 11．zone n．__________ 12．________n．摄入量，摄取量 1．The shortage of money has _____ (pose) a major problem. 2．The work had not been done very __________(thorough). 3．You are asked to swallow a capsule __________(contain) vitamin B. 4．She is ______ (rare) seen in public nowadays. 5．The deal is _________(estimate) to be worth around $1．5 million. 6．She always has her head ______ (bury) in a book. 7．This situation can be influenced by different _______(factor). 8．The report __________ (underline) his concern that standards were at risk.
1．locate vi.& vt.找出……的准确位置→__________n．位置；定位 2．vary vi.变化，不同→_________adj.各种各样的→_________n．多种式样；变化→___________n．变化物，变体；差异，变动 3．official adj.正式的；官方的 n．官员；要员→____________adv.官方地，正式地 4．oppose vi.& vt.抵制，反对；抗争→_________adj.与某事物相反；反对某事物，不赞成某事物 5．classify vt.将……分类；把……归入一类→________________n．归类，分类，分级 6．depress vt.使沮丧；使萧条→___________adj.沮丧的，情绪低落的→____________adj.令人沮丧的，让人忧愁的→____________n．沮丧；抑郁 7．vision n．视力；视野→_________adj.看得见的 8．actual adj.实际的，真实的→__________adv.实际地；真实地 9．system n．系统，体系→____________adj.系统化的，有条理的 10．globe n．地球，世界；地球仪→________adj.全球的；全世界的→__________adv.全球地 1．The commission is calling for a ______ (globe) ban on whaling. 2．Its geographical ________(locate)stimulated overseas mercantile enterprise. 3．I present an alternate ________________(classify)of recommendation systems in my book. 4．She remained bitterly _______ (oppose) to the idea of moving abroad. 5．But I had no idea what I wanted to do.That was really scary and __________ (depress). 6．________ (actual)，it would be much more sensible to do it later. 7．__________(official)，he resigned because of bad health. 8．We've been collecting data from _______(vary) sources.
1．___________ 由……组成 2．____________ 只要 3．_______________ 相比之下 4．_________ 死于…… 5．____________ 度过，熬过；接通，打通 6．___________________ 在……过程中 7．__________ 导致…… 8．______________ 提出 1．An increase in cars has ____________ the decline of public transport. 2．I tried to call you but I couldn't ____________． 3．Why is this century so special _______________ a thousand years ago？ 4．____________ you have your health，nothing else matters. 5．The necklace ____________ three strings of pearls. 6．In order to solve this problem，Shang Yang ______________ an idea.
由新知联想已知
1．contain vt.包含，容纳，装盛 [联想] ①hold vt.容纳 ②include vt.包括，包含 2．depressing adj.令人沮丧的，让人忧愁的 [联想] ①sad adj.难过的；悲哀的，令人悲痛的；凄惨的，阴郁的 ②disappointed adj.失望的，沮丧的；失意的 ③frustrated adj.懊恼的，沮丧的；无效的，没有得到满足的；失意的，不得志的 ④upset adj.心烦意乱的；难过的；(肠胃)不适的 3．actual adj.实际的，真实的 [联想] ①true adj.真的，真实的 ②real adj.真的，真实的
第二篇课文
①epidemic n．传染病，流行病
②an infectious disease 一种传染性疾病
③spread to 传播到……
④two weeks or less 两周或更少
⑤as long as 只要
⑥factor n．因素，要素
⑦virus n．病毒
⑧contact with 同……的联系
⑨bacteria n．细菌
⑩officially adv.官方地，正式地
be classified as 被归类为……
occur vi.发生；出现；出现在
the number of ……的数量
rare adj.稀有的，罕见的，不常发生的
baseline n．(医学或科学中的)基线，准线
as opposed to 相比之下
a widespread virus 一种广泛传播的病毒
affect vt.影响；使感染；侵袭；(感情上)深深打动
millions of 数百万
deserve vt.值得；应得；应受
the classification of an epidemic 归类为一种流行病
parallel n．(不同地点或不同时间的两事物之间的)联系，相似 adj.平行的
bird flu 禽流感
depressing adj.令人沮丧的，让人忧愁的
global epidemic 全球性流行病
tissue samples 组织样本
Spanish Flu 西班牙流感
a modern adaptation 一个现代的改编本
estimate vt.估计，估算
die from 死于(某种原因，不包括疾病、过度悲伤等)
in the 1330s 在十四世纪三十年代
The Black Death 黑死病；黑色死神
black spots 黑点
get through 度过，熬过
bury vt.埋葬，安葬；埋藏
as a result of 由于，作为……的结果
the most severe epidemic 最严重的流行病
initially adv.开始；最初；起初
pose vt.造成，引起，产生(问题、危险、困难等) n．(为画像、拍照等而摆的)姿势，姿态
threat n．威胁；恐吓；凶兆；征兆；构成威胁的人
lung disease 肺部疾病
Vietnam n．越南
Singapore n．新加坡
confused adj.迷惑的；不解的
infection rates 感染率
go up 上升
steadily adv.稳定地
in the course of 在……过程中
outbreak n．(战争或疾病)爆发，突然发生
trial n．试验；审判，审理
Ebola Virus Disease 埃博拉病毒性疾病
result in 导致……
a major loss 一个重大损失
actual adj.实际的，真实的
the survival rate 存活率
as low as 低至……
indicate vt.表明；指示；显示；暗示
get over 克服
underline vt.在……之下画线；强调，使突出
thorough adj.彻底的，全面的，详尽的
systematic adj.系统化的，有条理的
come up with 提出
EPIDEMICS① EXPLAINED
An epidemic is the name given to an infectious disease② that rapidly spreads to③ a large number of people within a short period of time—usually two weeks or less④[1].Epidemics have been happening for as long as⑤ there have been people living on Earth[2].They can be caused by several different factors⑥， such as a virus⑦ being carried into an area，or changes in the way people live[3]，like more people living in an area，which increases the chances of them coming into contact with⑧ a virus or bacteria⑨.
[1]that引导定语从句，修饰先行词an infectious disease。
[2]as long as引导条件状语从句，意为“只要”。
[3]people live是定语从句，修饰the way。
Each disease can only officially⑩ be classified as an epidemic once a certain number of deaths have occurred from the disease.The number of deaths is different for every disease.So a very rare disease will have a low baseline and just a few cases of it in one place will be classified as an epidemic；as opposed to more common diseases，such as the flu，that have a higher baseline[4].The common cold is a widespread virus that affects millions of people, but it is not seen as being a serious enough condition to deserve the classification of an epidemic .[5]
[4]that引导定语从句，修饰先行词more common diseases。
[5]that引导定语从句，修饰先行词a widespread virus。
With recent press reports drawing parallels between bird flu and killer epidemics of the past, Jim Smith looks at the sometimes depressing history of epidemics for clues about how we can create a more positive future without epidemics.[6]
[6]With recent press reports drawing parallels...是with复合结构，draw和report之间是逻辑上的主谓关系，因此用动词-ing形式。
Since bird flu first appeared in 1997，it has taken more than a hundred lives.Many people fear it could be the next global epidemic ， especially as scientists who have gone into detail studying tissue samples from the bodies of people who died of the 1918 Spanish Flu have proved that bird flu is a modern adaptation of that virus.[7]
[7]第一个who引导定语从句，修饰scientists；第二个who修饰people；第一个that引导宾语从句。
One of the earliest epidemics on record happened between about 500 and 550 CE.Scientists now estimate that up to 50% of the area's population died from the epidemic，making it one of the main causes of the fall of the Roman Empire[8].Then，in the 1330s ， this epidemic returned，this time in Asia.It spread rapidly to Europe and became known as “The Black Death ” because one visible symptom was black spots on the body.
[8]making...是动词-ing形式短语作状语，表示结果。
Centuries later，the Great Flu Epidemic of 1918，also called the Spanish Flu，struck near the end of World War Ⅰ.Families who had only just got through the war now had to bury their loved ones who had died of the disease.[9]As a result of the war，more people were travelling and moving perhaps than ever before in history and this caused the epidemic to spread worldwide.Having killed up to 50 million people in 18 months，the Spanish Flu is believed to have been the most severe epidemic in history.More people died of the flu than died in the war.Initially ， many people believed that such epidemics no longer posed a threat until very recently when SARS became a cause for concern.
[9]第一个who引导定语从句，修饰Families；第二个who引导定语从句，修饰their loved ones。
The SARS epidemic began in 2002 with a case of lung disease in Guangdong Province.It spread to Canada，Vietnam and Singapore and lasted until 2003．SARS was examined by scientists，who were confused by this new disease and wanted to learn more about it and its causes.Infection rates went up steadily ， and in the course of the outbreak ， about 8，000 people were infected over nine months.Since the end of the SARS epidemic，scientists have been doing trials on treatments to prevent any future outbreaks.
Then，from 2013 to 2016，there was the most widespread outbreak of the Ebola Virus Disease(EVD) in West Africa，which resulted in a major loss of life in a number of west African countries.11，310 deaths were officially recorded，but the actual number of deaths is probably much higher.The virus was extremely infectious and the survival rate was as low as 30% in some areas，indicating that very few people got over it.
Despite，or perhaps because of，the epidemics the world has faced in recent years，governments worldwide have underlined the fact that they want thorough and systematic medical research on epidemics to get at the causes and come up with cures as soon as possible.Countries will need to work together to do this because teamwork among nations across the globe can save lives.
流行病解说
流行病是指在短时间内(通常两周或更短)迅速在大量人群中传播的传染性疾病。自地球上有人类生活以来，流行病就一直存在。它们可能由不同的因素引起，例如病毒被带入某个地区，或者由于人们生活方式的改变，比如说某一地区居住的人群增多，从而增加了接触病毒或细菌的概率。
只有致死病例达到一定数量，某种疾病才会被正式定性为流行病。每种疾病的死亡人数各不相同。因此，罕见疾病的基线很低，即使某一地区只出现少数病例，也会被认定为是流行病；与此相比，常见疾病的基线较高，如流感。普通感冒由一种广泛传播的病毒引起，可感染数百万人，但它并没严重到可以被称为流行病。
最近有新闻报道，吉姆·史密斯将禽流感和过去致命的流行病做对比，在屡屡令人感到沮丧的流行病史中寻找线索，从而创造一个远离流行病的美好未来。
禽流感自1997年首次出现以来，已经夺去了一百多人的生命。尤其因为科学家们仔细研究了1918年西班牙流感死亡者尸体的组织样本，证明禽流感是该病毒的现代变异版本，许多人担心它可能会引起下一场全球流行病。
人类有记载的最早的流行病，大约发生在公元500年至550年之间。现今科学家估计，发病区域多达50%的人口死于这一流行病，成为罗马帝国衰落的一个主要原因。接着，14世纪30 年代，这一流行病又卷土重来，这次发生在亚洲，并迅速传播到欧洲。由于患者身上会出现明显的黑斑症状，这种流行病被称为“黑死病”。
几个世纪后，第一次世界大战快结束时爆发了1918年大流感，又称西班牙流感。刚刚熬过战争的人们现在不得不埋葬他们死于疾病的亲人。战争引发的人口流动前所未有，从而导致这一流行病蔓延到全世界。西班牙流感在18个月内造成5 000万人死亡，成为历史上最严重的流行病。死于该病的人比死于战争的人还要多。最初，人们以为这种大规模流行病不会再对人类构成威胁，直至“非典”出现，再次让全球陷入担忧。
“非典”疫情始于2002年广东省的一例肺部疾病，后蔓延到加拿大、越南和新加坡，并一直持续到2003年。科学家对这种新型疾病感到困惑，对SARS病毒进行检测，以期了解该病与致病原因的更多信息。非典的感染率不断上升，在爆发期九个月内感染了约8 000人。非典疫情结束后，科学家们一直在试验各种治疗手段，以防止未来疫情再爆发。
随后，2013年到2016年间，西非爆发了大规模传染病——埃博拉病毒性疾病(EVD)，夺去了这一地区多个国家很多人的生命。官方统计的死亡人数为11310 人，而实际死亡人数可能要更高。该病毒传染性极强，一些地区的存活率低至30%，也就是说很少有人能康复。
尽管，或者可能是因为近年来全球爆发了流行病，世界各国政府都已经强调，要对流行病进行深入系统的医学研究，以便尽快找出原因并找到治疗方法。这需要各个国家的共同努力，因为只有全球各国之间的团队合作才能拯救生命。
Period 1
速记·重点词汇——牢记词形和词义
1．contain 2．factor 3．rare 4．估计，估算 5．bury
6．pose 7．outbreak 8．trial 9．underline
10．thorough 11．地区，地带 12．intake
运用·语境填空——测试一下基本功
1．posed 2．thoroughly 3．containing 4．rarely
5．estimated 6．buried 7．factors 8．underlined
速记·派生词汇——牢记词形和词义
1．location 2．various；variety；variation 3．officially
4．opposed 5．classification 6．depressed；depressing；depression 7．visible 8．actually 9．systematic
10．global；globally
运用·语境填空——测试一下基本功
1．global 2．location 3．classification 4．opposed
5．depressing 6．Actually 7．Officially 8．various
速记·重点短语——记牢搭配和意义
1．consist of 2．as long as 3．as opposed to 4．die from
5．get through 6．in the course of 7．result in 8．come up with
运用·语境填空——测试一下基本功
1．resulted in 2．get through 3．as opposed to 4．As long as 5．consists of 6．came up with
1 / 1(共37张PPT)
Period 1
Section Ⅱ LESSON 2 & LESSON 3
UNIT 9 HUMAN BIOLOGY
主题语境
人与社会 —— 科学与技术
1．_______ vt.包含，容纳，装盛
2．________n．因素，要素
3．______adj.稀有的，罕见的，不常发生的
4．estimate vt.__________
5．______vt.埋葬，安葬；埋藏
课时练案 单元词汇表
contain
factor
rare
估计，估算
bury
6．______vt.造成，引起，产生(问题、危险、困难等)n.(为画像、拍照等而摆的)姿势，姿态
7．__________n．(战争或疾病)爆发，突然发生
8．_______n．试验；审判，审理
9．___________vt.强调，使突出；在……之下画线
10．__________adj.彻底的，全面的，详尽的
11．zone n．__________
12．________n．摄入量，摄取量
pose
outbreak
trial
underline
thorough
地区，地带
intake
1．The shortage of money has ______ (pose) a major problem.
2．The work had not been done very __________(thorough).
3．You are asked to swallow a capsule __________(contain) vitamin B.
4．She is ______ (rare) seen in public nowadays.
5．The deal is _________(estimate) to be worth around $1.5 million.
6．She always has her head ______ (bury) in a book.
7．This situation can be influenced by different _______(factor).
8．The report _________(underline) his concern that standards were at risk.
posed
thoroughly
containing
rarely
estimated
buried
factors
underlined
1．locate vi.& vt.找出……的准确位置→__________n．位置；定位
2．vary vi.变化，不同→_________adj.各种各样的→________n．多种式样；变化→___________n．变化物，变体；差异，变动
3．official adj.正式的；官方的n．官员；要员→____________adv.官方地，正式地
4．oppose vi.& vt.抵制，反对；抗争→________adj.与某事物相反；反对某事物，不赞成某事物
location
various
variety
variation
officially
opposed
5．classify vt.将……分类；把……归入一类→________________n．
归类，分类，分级
6．depress vt.使沮丧；使萧条→___________adj.沮丧的，情绪低落的→____________adj.令人沮丧的，让人忧愁的→____________n．
沮丧；抑郁
7．vision n．视力；视野→_________adj.看得见的
8．actual adj.实际的，真实的→__________adv.实际地；真实地
9．system n．系统，体系→____________adj.系统化的，有条理的
10．globe n．地球，世界；地球仪→________adj.全球的；全世界的→__________adv.全球地
classification
depressed
depressing
depression
visible
actually
systematic
global
globally
1．The commission is calling for a ______ (globe) ban on whaling.
2．Its geographical ________(locate)stimulated overseas mercantile enterprise.
3．I present an alternate _______________(classify)of recommendation systems in my book.
4．She remained bitterly _______(oppose) to the idea of moving abroad.
global
location
classification
opposed
5．But I had no idea what I wanted to do.That was really scary and __________(depress).
6．________ (actual)，it would be much more sensible to do it later.
7．__________(official)，he resigned because of bad health.
8．We've been collecting data from _______(vary) sources.
depressing
Actually
Officially
various
1．___________ 由……组成
2．____________ 只要
3．_______________ 相比之下
4．_________ 死于……
5．____________ 度过，熬过；接通，打通
6．___________________ 在……过程中
7．__________ 导致……
8．______________ 提出
consist of
as long as
as opposed to
die from
get through
in the course of
result in
come up with
1．An increase in cars has __________ the decline of public transport.
2．I tried to call you but I couldn't ____________．
3．Why is this century so special ____________ a thousand years ago？
4．__________ you have your health，nothing else matters.
5．The necklace ____________ three strings of pearls.
6．In order to solve this problem，Shang Yang _____________an idea.
resulted in
get through
as opposed to
As long as
consists of
came up with
1．contain vt.包含，容纳，装盛
[联想] ①hold vt.容纳
②include vt.包括，包含
词汇联想 由新知联想已知
2．depressing adj.令人沮丧的，让人忧愁的
[联想] ①sad adj.难过的；悲哀的，令人悲痛的；凄惨的，阴郁的
②disappointed adj.失望的，沮丧的；失意的
③frustrated adj.懊恼的，沮丧的；无效的，没有得到满足的；失意的，不得志的
④upset adj.心烦意乱的；难过的；(肠胃)不适的
3．actual adj.实际的，真实的
[联想] ①true adj.真的，真实的
②real adj.真的，真实的
①epidemic n．传染病，流行病
②an infectious disease 一种传染性疾病
③spread to 传播到……
④two weeks or less 两周或更少
⑤as long as 只要
⑥factor n．因素，要素
课下预习 第二篇课文
⑦virus n．病毒
⑧contact with 同……的联系
⑨bacteria n．细菌
⑩officially adv.官方地，正式地
be classified as 被归类为……
occur vi.发生；出现；出现在
the number of ……的数量
rare adj.稀有的，罕见的，不常发生的
Period 1
课时练案
课下预习
baseline n．(医学或科学中的)基线，准线
as opposed to 相比之下
a widespread virus 一种广泛传播的病毒
affect vt.影响；使感染；侵袭；(感情上)深深打动
millions of 数百万
deserve vt.值得；应得；应受
the classification of an epidemic 归类为一种流行病
parallel n．(不同地点或不同时间的两事物之间的)联系，相似 adj.平行的
bird flu 禽流感
depressing adj.令人沮丧的，让人忧愁的
global epidemic 全球性流行病
tissue samples 组织样本
Spanish Flu 西班牙流感
a modern adaptation 一个现代的改编本
estimate vt.估计，估算
die from 死于(某种原因，不包括疾病、过度悲伤等)
in the 1330s 在十四世纪三十年代
The Black Death 黑死病；黑色死神
black spots 黑点
get through 度过，熬过
bury vt.埋葬，安葬；埋藏
as a result of 由于，作为……的结果
the most severe epidemic 最严重的流行病
initially adv.开始；最初；起初
pose vt.造成，引起，产生(问题、危险、困难等) n．(为画像、拍照等而摆的)姿势，姿态
threat n．威胁；恐吓；凶兆；征兆；构成威胁的人
lung disease 肺部疾病
Vietnam n．越南
Singapore n．新加坡
confused adj.迷惑的；不解的
infection rates 感染率
go up 上升
steadily adv.稳定地
in the course of 在……过程中
outbreak n．(战争或疾病)爆发，突然发生
51 trial n．试验；审判，审理
52 Ebola Virus Disease 埃博拉病毒性疾病
53 result in 导致……
54 a major loss 一个重大损失
55 actual adj.实际的，真实的
56 the survival rate 存活率
57 as low as 低至……
58 indicate vt.表明；指示；显示；暗示
59 get over 克服
60 underline vt.在……之下画线；强调，使突出
61 thorough adj.彻底的，全面的，详尽的
62 systematic adj.系统化的，有条理的
63 come up with 提出
EPIDEMICS① EXPLAINED
An epidemic is the name given to an infectious disease② that rapidly spreads to③ a large number of people within a short period of time—usually two weeks or less④ [1].Epidemics have been happening for as long as⑤ there have been people living on Earth[2].They can be caused by several different factors⑥， such as a virus⑦ being carried into an area，or changes in the way people live[3]，like more people living in an area，which increases the chances of them coming into contact with⑧ a virus or bacteria⑨.
[1]that引导定语从句，修饰先行词an infectious disease。
[2]as long as引导条件状语从句，意为“只要”。
[3]people live是定语从句，修饰the way。
Each disease can only officially⑩ be classified as an epidemic once a certain number of deaths have occurred from the disease.The number of deaths is different for every disease.So a very rare disease will have a low baseline and just a few cases of it in one place will be classified as an epidemic；as opposed to more common diseases，such as the flu，that have a higher baseline[4].The common cold is a widespread virus that affects millions of people, but it is not seen as being a serious enough condition to deserve the classification of an epidemic .[5]
[4]that引导定语从句，修饰先行词more common diseases。
[5]that引导定语从句，修饰先行词a widespread virus。
With recent press reports drawing parallels between bird flu and killer epidemics of the past, Jim Smith looks at the sometimes depressing history of epidemics for clues about how we can create a more positive future without epidemics.[6]
[6]With recent press reports drawing parallels...是with复合结构，draw和report之间是逻辑上的主谓关系，因此用动词-ing形式。
Since bird flu first appeared in 1997，it has taken more than a hundred lives.Many people fear it could be the next global epidemic ， especially as scientists who have gone into detail studying tissue samples from the bodies of people who died of the 1918 Spanish Flu have proved that bird flu is a modern adaptation of that virus.[7]
[7]第一个who引导定语从句，修饰scientists；第二个who修饰people；第一个that引导宾语从句。
One of the earliest epidemics on record happened between about 500 and 550 CE.Scientists now estimate that up to 50% of the area's population died from the epidemic，making it one of the main causes of the fall of the Roman Empire[8].Then，in the 1330s ， this epidemic returned，this time in Asia.It spread rapidly to Europe and became known as “The Black Death ”because one visible symptom was black spots on the body.
[8]making...是动词-ing形式短语作状语，表示结果。
Centuries later，the Great Flu Epidemic of 1918，also called the Spanish Flu，struck near the end of World War Ⅰ.Families who had only just got through the war now had to bury their loved ones who had died of the disease.[9]As a result of the war，more people were travelling and moving perhaps than ever before in history and this caused the epidemic to spread worldwide.Having killed up to 50 million people in 18 months，the Spanish Flu is believed to have been the most severe epidemic in history.More people died of the flu than died in the war.Initially ， many people believed that such epidemics no longer posed a threat until very recently when SARS became a cause for concern.
[9]第一个who引导定语从句，修饰Families；第二个who引导定语从句，修饰their loved ones。
The SARS epidemic began in 2002 with a case of lung disease in Guangdong Province.It spread to Canada，Vietnam and Singapore and lasted until 2003．SARS was examined by scientists，who were confused by this new disease and wanted to learn more about it and its causes.Infection rates went up steadily ， and in the course of the outbreak ， about 8，000 people were infected over nine months.Since the end of the SARS epidemic，scientists have been doing trials51 on treatments to prevent any future outbreaks.
流行病解说
流行病是指在短时间内(通常两周或更短)迅速在大量人群中传播的传染性疾病。自地球上有人类生活以来，流行病就一直存在。它们可能由不同的因素引起，例如病毒被带入某个地区，或者由于人们生活方式的改变，比如说某一地区居住的人群增多，从而增加了接触病毒或细菌的概率。
只有致死病例达到一定数量，某种疾病才会被正式定性为流行病。每种疾病的死亡人数各不相同。因此，罕见疾病的基线很低，即使某一地区只出现少数病例，也会被认定为是流行病；与此相比，常见疾病的基线较高，如流感。普通感冒由一种广泛传播的病毒引起，可感染数百万人，但它并没严重到可以被称为流行病。
最近有新闻报道，吉姆·史密斯将禽流感和过去致命的流行病做对比，在屡屡令人感到沮丧的流行病史中寻找线索，从而创造一个远离流行病的美好未来。
禽流感自1997年首次出现以来，已经夺去了一百多人的生命。尤其因为科学家们仔细研究了1918年西班牙流感死亡者尸体的组织样本，证明禽流感是该病毒的现代变异版本，许多人担心它可能会引起下一场全球流行病。
人类有记载的最早的流行病，大约发生在公元500年至550年之间。现今科学家估计，发病区域多达50%的人口死于这一流行病，成为罗马帝国衰落的一个主要原因。接着，14世纪30 年代，这一流行病又卷土重来，这次发生在亚洲，并迅速传播到欧洲。由于患者身上会出现明显的黑斑症状，这种流行病被称为“黑死病”。
几个世纪后，第一次世界大战快结束时爆发了1918年大流感，又称西班牙流感。刚刚熬过战争的人们现在不得不埋葬他们死于疾病的亲人。战争引发的人口流动前所未有，从而导致这一流行病蔓延到全世界。西班牙流感在18个月内造成5 000万人死亡，成为历史上最严重的流行病。死于该病的人比死于战争的人还要多。最初，人们以为这种大规模流行病不会再对人类构成威胁，直至“非典”出现，再次让全球陷入担忧。
“非典”疫情始于2002年广东省的一例肺部疾病，后蔓延到加拿大、越南和新加坡，并一直持续到2003年。科学家对这种新型疾病感到困惑，对SARS病毒进行检测，以期了解该病与致病原因的更多信息。非典的感染率不断上升，在爆发期九个月内感染了约8 000人。非典疫情结束后，科学家们一直在试验各种治疗手段，以防止未来疫情再爆发。
随后，2013年到2016年间，西非爆发了大规模传染病——埃博拉病毒性疾病(EVD)，夺去了这一地区多个国家很多人的生命。官方统计的死亡人数为11310 人，而实际死亡人数可能要更高。该病毒传染性极强，一些地区的存活率低至30%，也就是说很少有人能康复。
尽管，或者可能是因为近年来全球爆发了流行病，世界各国政府都已经强调，要对流行病进行深入系统的医学研究，以便尽快找出原因并找到治疗方法。这需要各个国家的共同努力，因为只有全球各国之间的团队合作才能拯救生命。
THANKS
