Malaria kills more than 500,000 people a year worldwide, and causes illness in millions more, most of them children living in sub-Saharan Africa.
A third of all patients in Kenya's third-largest city, Kisumu, and its environs suffer from malaria.
Although existing interventions have helped to reduce the disease over the past decade, scientists in this lab in western Kenya are working on a vaccine-with the help of Britain's GlaxoSmithKline and other partners-that could add an important component to malaria control.
Scientist say vaccinating people, especially young children, is the key to eradicating the disease.
Dr. Martina Oneko helped to carry out the vaccination process in rural western Kenya.
"We saw a very good success of the vaccine resulting in health improvements in these children. They were just not sick as their counterparts in the community who were not vaccinated. The overall vaccine efficacy in the older age group for all the sites was 47 percent and in the younger age it was 27 percent."
“我们看到了疫苗在改善这些孩子健康方面非常成功的效果 。相比社区没接种的孩子，他们没有病发情况 。在老年人群中整体疫苗功效为47%,年轻人则是27% 。”
The RTS vaccine prevents the malaria parasite from infecting, maturing and multiplying in the liver, from which it normally re-enters the blood and infects red blood cells, leading to the disease.
Some residents have welcomed the initiative.
"Pregnant mothers and even children, unborn babies, they've been dying because of malaria, so I think with the introduction of that vaccine will save many young lives."
Mercy Adhiambo added, "Even me, I will use it, even my family will use it and we accept it."
According to researchers, the vaccine may not be the final answer to malaria, but along with other measures like mosquito nets, spraying drainage systems and clearing bushes, it may make a big difference to millions of people in sub-Saharan Africa.
1.suffer from 忍受，遭受；患…病
Why do people suffer from phobias?
Add all this up and Mr Martin argues that both America and Britain suffer fromweak demand rather than enfeebled supply.
2.help to 有助于，促进
Your advice was a great help to me.
I wouldn't refuse help to an old friend.
3.carry out v. 执行，实行；贯彻
You must carry out my orders.
Can you stipulate they would carry out the treaty?
4.lead to 导致；通向
This can lead to significant distress, but have no fear!
I believe that his friends, above all Halifax, came to the conclusion that he must berooted out of the life he was leading at Trinity which must soon lead to decay ofmind and health.