Luyện nghe VOA: Experts: Zika Could Infect 93 Million in Americas

Experts: Zika Could Infect 93 Million in Americas
Health experts have (1)__________________ about Zika virus. They say the virus will (2)______________________ before the Zika epidemic finally ends.
The experts say a new model shows a very (3)________________ could become infected before then. The model is a (4)_____________ from England, Sweden and the United States.
(5)_______________ the Zika virus could infect over 93 million people in South America, North America and the Caribbean. The model projects 1.6 million young women (6)_______________.
Experts say a woman who is infected during the early months of (7)________________________ is at risk of giving birth to a baby with microcephaly. A baby born with microcephaly has a small head and brain.
The condition causes mental and (8)________________, seizures and sometimes death. But experts say not every pregnant woman infected with Zika will give birth to a child with (9)________________.
The Associated Press says the Zika virus is spreading quickly in South America and the Caribbean. (10)___________________ can pass the infection to humans.
Over 1,400 cases of the Zika virus have been reported in the U.S., according to the Centers for Disease Control.
The Zika study (11)_________________ in the journal Nature Microbiology. It is the most (12)_____________________ to date about the spread of the virus.
In developing their study, researchers used information from (13)__________________ of two other viruses: dengue and Chikungunya.
Dengue is in the (14)_______________ as Zika. Chikungunya is also spread by mosquitoes. The viruses can cause headaches, (15)__________________ and higher than normal body temperature. But 80 percent of people who contract Zika have (16)__________________.
Researchers also (17)____________________ on blood tests from people who have been infected with Zika. That gave them information to predict the (18)______________________ at the local level.
Unique model
The model took into (19)_________________ how an event called herd immunity can change the number of infections. Herd immunity happens when a disease or virus can no longer spread because so many people are infected. When that happens, others are (20)_________________ the disease.
“So really there’s going to be (21)_________________ of the population that remains uninfected after the [Zika] epidemic," said Alex Perkins.
Perkins is one of the researchers who took part in the study. He added the (22)________________ off before it can infect everyone.
There is (23)__________________ to protect people against Zika virus. The World Health Organization declared the virus a public health emergency earlier this year.
I’m Marsha James
Jessica Berman wrote this story for VOA News. Jim Dresbach adapted it for Learning English. George Grow was the editor.
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Words in This Story

epidemicn. an occurrence in which a disease spreads very quickly and affects a large number of people
symptomn. a change in the body or mind which indicates that a disease is present
transmission – n. the act or process of spreading or passing something from one person or thing to another
defect – n. a part that is missing or misshaped
project – v. to plan or estimate something

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