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双语|科学家:儿童新冠肺热症状较轻是由于常得感冒

时间:2020-06-24  来源:未知   作者:admin

对新冠疫情的监测发现,儿童的发病率较矮,症状也较轻。这是为什么呢?科学家认为,这能够是由于儿童频繁得感冒,免疫体系已经做益了足够准备。

Photo by CDC on Unsplash

Children may be protected from coronavirus because they catch so many colds, scientists have suggested.

科学家指出,儿童频繁感冒能够会珍惜他们免受新冠病毒的迫害。

Figures from the Office for National Statistics (ONS) suggest children are just as likely to pick up the virus, but few ever develop serious disease, or even show symptoms.

英国国家统计局的数据表现,儿童和大人相通容易感染新冠病毒,但是发展成重症的儿童异国众少,有些甚至异国外现出症状。

Now scientists have suggested that children may be resistant because their immune systems are already well primed by the common cold.

现在科学家指出,儿童对新冠病毒能够有招架力,由于清淡感冒已经让他们的免疫体系做益了足够准备。

The common cold is caused by four different types of coronavirus which circulate in the community and are largely harmless. But while adults pick up a cold around two to four times a year, school age children catch an average of 12 colds annually, studies have shown.

清淡感冒是由社区中通走的四栽迥异的冠状病毒引首的,大片面都是无害的。但是钻研表现,成年人每年大约感冒两到四次,学龄儿童每年平均感冒12次。

Professor Sir John Bell, Regius Professor of Medicine, University of Oxford told the House of Lords Science and Technology Select Committee, that it may allow youngsters to build up some ongoing resistance that adults do not have.

牛津大学医药学钦定讲座教授约翰·贝尔爵士通知上议院科学技术稀奇委员会说,这能够会让儿童竖立首成年人异国的招架力。

“How you respond may be due to the state of your existing immunity to coronaviruses generally,” he told peers.

他通知同走说:“你对病毒的逆答能够要归因于你对冠状病毒群体的现有免疫力状况。”

“There is an interesting speculation at the moment, that suggests that many people in young or middle aged groups may have T-cells that can already see coronavirus. It may well be able to provide some protection against this pathogen when it arrives.

“现在有一栽兴趣的推想,就是很众年轻人或中年人能够拥有接触过冠状病毒的T淋巴细胞。当人体感染冠状病毒后,这栽细胞很能够会珍惜人体不受病原体陵犯。”

“A lot of kids get seasonal coronaviruses and it’s pretty common in our population and many will have quite a strong immunity to coronaviruses generally.

“很众孩子都会感染季节性冠状病毒,这栽病毒在吾们的人口中相等远大,很众人对冠状病毒群体都已拥有相等强的免疫力。”

“That is unproven,新闻动态 but there is evidence now for cross-reactivity at T-cell level at least, and that well might help dampen the effects of the virus when we get it.”

“这还异国通过证实,但是现在有证据外明病毒起码在T淋巴细胞层面会发生交叉逆答,这会在感染时降矮病毒的危害性。”

Studies have shown that by the age of four, some 70 percent of children already have antibodies against seasonal coronavirus, which could offer important protection.

以前的钻研表现,大约70%的儿童在四岁前已经对季节性冠状病毒拥有抗体,该抗体能挑供主要的珍惜作用。

Professor Adrian Hayday, Chair, Department of Immunobiology, King's College London said the immune systems of young people may simply be better at reacting to new viruses.

伦敦国王学院免疫生物学部主任阿德里安·暗戴教授外示, 年轻人的免疫体系能够就是更善于答对新病毒。

“All adults past a certain age - 30 to 35 - eventually have no thymus so their T-cells work by looking at whether they have seen something before, whereas children are very good at seeing things that are completely unknown.

“一切超过肯定年龄——30到35岁——的成年人末了胸腺布局都会消逝,因此他们的T淋巴细胞是否发挥作用取决于他们是否感染过这栽病毒,而孩子们的T淋巴细胞则专门善于答对十足生硬的病毒。”

The scientists also said that older people may suffer from immune cell ‘senescence’ where their immune cells start to shut down but are not cleared away and replaced with a working version.

科学家还外示,晚年人能够遭受了免疫细胞的“老化”,他们的免疫细胞最先收工,但却异国被驱逐,也异国能做事的免疫细胞来替代。

But Prof Bell said for most people coronavirus was not a serious illness.

但是贝尔教授说,对于大无数人而言新冠病毒不会发展成重病。

“The people who get severe disease and die, the vast majority are elderly people and when young people get this disease they tend not to suffer very much.

“发展成重症而物化亡的绝大无数人都是晚年人,倘若年轻人感染了病毒,他们清淡都不会太主要。”

“That might be the state of people’s immune system at different ages. 70 percent of the people who get this are completely asymptomatic, so at one end of the spectrum this is not a bad viral disease, at the other end it’s terrible.

“这能够是由于人的免疫体系在迥异年龄的状态纷歧样。感染新冠病毒的人有70%十足异国症状,因此从一面来望这不是一栽很糟糕的病毒性疾病,但从另一面来望这个病专门危险。”

“The vast majority of people who get this disease don’t even know they’ve had it.”

“绝大无数感染病毒的人甚至都不清新本身已经感染上了。”

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