关于的contagious behavior英语作文
AIDS has become a topic of common concern to the people of the world.How to prevent AIDS has become a topic of attention.Everyone knows the horror of AIDS,which is called the"devil".So,what is a"devil"in the end?
Generally speaking,AIDS is the human immune system was damaged by a virus called"HIV",so the body los resistance,not with tho of life-threatening bacteria fighting,so that the body has a variety of incurable infections and tumors,eventually lead to a vere infection of infectious dia deaths.
It is understood that about 39 million 500 thousand people worldwide are infected with AIDS,increasing 4 million 300 thousand people every year.That is to say,every 8 conds in the world,110 thousand people will be infected with AIDS,and 8000 infected people will be killed every day.What an amazing number this is.
So,how can AIDS be contagious?It is caud by blood,unclean xual intercour,drug u
or intravenous injection and mother to child transmission.Some people ask whether AIDS is very rious?This is of cour,becau the HIV-induced infectious dia is a very high death rate,and its mortality rate is cond in all dias.AIDS is like a sudden wind,"Shua"all of a sudden in you did not know the situation has spread rapidly.
In our country,what is the epidemic of AIDS?Since 1985,only a few people have been infected each year,most of them are people who come to China abroad,or people from our country.It lasted about four or five years.By the end of the 80s of the last century,the first pandemic appeared:China began the epidemic of AIDS on the Yunnan border.Since the middle of the 90s,a rapid 河南省高校排名
growth period has been developed,which is characterized by a rapid spread of the whole country.From 1994 to now,nearly 10 years have been growing at a rate of more than 40%.