日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
World
Home / World / Asia-Pacific

Australian study shows children develop COVID-19 immune responses without testing positive

Xinhua | Updated: 2020-11-19 10:54
Share
Share - WeChat

SYDNEY - Children could mount a COVID-19 immune response to fight off infection after being exposed to the virus through infected parents, a new Australian case study has found.

The research, led by the Murdoch Children's Research Institute (MCRI), revealed that despite close contact with symptomatic infected parents, all three primary school-aged kids in a Melbourne family developed mild or no symptoms and repeatedly tested negative for COVID-19 using the polymerase chain reaction (PCR) test.

After a series of immunological investigations on the family, researchers found SARS-CoV-2 specific antibodies in the saliva of all family members and in detailed serology testing.

Meanwhile, all three children had an active cellular immune response, suggestive of activation of a viral infection. The research paper has been published in Nature Communications.

"I think this is important because it's the first detailed description of the immune response of children who have been exposed to the virus in their household that have tested negative to the virus," Joint first author Melanie Neeland from MCRI told Xinhua on Wednesday.

"The results suggested they were infected. However, they mounted an immune response that was so quick and effective, that it stopped the replication of the virus, to an extent that it couldn't be detected on the diagnostic test."

She said the study also revealed immunological differences between adults and children, which may explain differences in the infection, transmission and disease severity that were seen in related to COVID-19 in these age groups.

In the future, the team plans to conduct a wider research involving hundreds of children to gather more detailed information about their immune responses and how they may potentially respond to a vaccination.

Most Viewed in 24 Hours
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: a天堂在线| 亚洲韩精品欧美一区二区三区 | 亚洲一区二区三区四区精品 | 色艹| 一级香蕉免费毛片 | 国产精品自线在线播放 | 国产精品久久久99 | 国产在线综合一区二区三区 | 午夜性色一区二区三区不卡视频 | 精品欧美一区二区三区在线 | 小明看片成人永久在线观看 | 欧美成人免费全网站大片 | 亚洲乱人伦在线 | 91亚洲一区| 9191在线| 一本大道香蕉中文日本不卡高清二区 | 国产精品日本无码久久一 | 91亚洲精品一区二区福利 | 亚洲日韩中文字幕 | 精品一区二区三区免费站 | 免费在线观看视频a | 日本精品久久久久久久久免费 | 97超碰免费 | 国产精品久久久精品 | 日本高清香蕉色视频在线观看 | 亚洲成人精品久久久 | 成年美女黄的视频网站 | 欧美日韩一区二区在线 | 久草综合在线视频 | 国产97免费视频 | 国产成人精品免费视频大全最热 | 久久婷婷色香五月综合激情 | 天堂资源在线观看 | 九九热爱视频精品视频高清 | 奇米影视首页 | 成人av免费观看 | 久久99视频精品 | 欧美黑人伦理 | 亚洲一区在线播放 | 狠狠插天天干 | 99久久久国产精品免费99 |