久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

English 中文網 漫畫網 愛新聞iNews 翻譯論壇
中國網站品牌欄目(頻道)
當前位置: Language Tips> Audio & Video> 新聞播報> Normal Speed News VOA常速

Birth delivery method gives babies different bacteria

[ 2010-07-01 17:03]     字號 [] [] []  
免費訂閱30天China Daily雙語新聞手機報:移動用戶編輯短信CD至106580009009

Birth delivery method gives babies different bacteria

Around the world, cesarean births are on the rise, and many experts think that's a bad thing. Now, a new study looks at one way that babies delivered by c-section are different.

The number of surgical deliveries has been increasing for years. Some cesareans are medically necessary. But in other cases, women just want the convenience of knowing when they will give birth. For some, it's the modern thing to do.

Doctors like that predictability, too. And health care providers usually charge more.

A World Health Organization survey of hospital and clinic births in nine Asian countries earlier this year found 27 percent were c-sections, and in China it was nearly half of all births. And there were more deaths and complications when women had a cesarean delivery that wasn't medically required.

Other research has found c-section babies are more likely to have asthma or allergies.

Now, a small but intriguing new study looks at one way the delivery method might affect the baby's health. Co-lead author Elizabeth Costello, now at Stanford, was at the University of Colorado when the study was done.

"We were looking at effect of delivery mode on the very first bacteria that the baby is exposed to," Costello explained. "So we sampled babies literally seconds and minutes after they were delivered. So we're only looking at a snapshot of that very first moment in time."

To do that, Costello's co-lead researcher Maria Dominguez-Bello of the University of Puerto Rico took samples of bacteria from mothers and babies immediately before and after birth. Women who gave birth vaginally transferred the unique mix, their unique "community" of vaginal bacterial to the newborn baby.

"And that was in direct contrast with the c-section babies, who harbored bacterial communities that resembled human skin, but not their own mother's human skin any more than any of the other mothers in the study."

The researchers suspect that the newborn c-section babies might be picking up their generic bacteria mix from the air - one way bacteria gets on our skin.

Exactly how the differences in bacteria might make vaginally born babies less prone to allergies and asthma isn't yet clear, but it does point to a difference that researchers can look at going forward. Costello says she expects more studies as DNA analysis gets cheaper and faster.

So, does Costello's study support the notion that vaginal birth is somehow "better" than a cesarean? Speaking via Skype, she says no.

"I think further studies will be necessary to show whether the differences we've demonstrated depending on delivery mode of babies when they first emerge into the world actually carry over time, and whether those differences might contribute to health outcomes."

Elizabeth Costello's paper is published online by the Proceedings of the National Academy of Sciences.

vaginally: via the vagina 通過陰道

Related stories:

African maternal and child mortality rate remains high despite improvements elsewhere

Caesarean deliveries at all-time high in US

Simple, low-cost ways to cut the risk of an early birth

Study finds drop in deaths of mothers in developing world

(來源:VOA 編輯:陳丹妮)

 
中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
 

關注和訂閱

人氣排行

翻譯服務

中國日報網翻譯工作室

我們提供:媒體、文化、財經法律等專業領域的中英互譯服務
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    强开小嫩苞一区二区三区网站| 女人和拘做爰正片视频| 男女激情无遮挡| 亚洲制服在线观看| 日本黄网站免费| 国产专区在线视频| 中文字幕66页| 黄色免费视频大全| 日本三级中文字幕在线观看| 不卡av免费在线| 日韩国产欧美亚洲| 强开小嫩苞一区二区三区网站| 久久久久国产一区| 欧美丰满熟妇bbbbbb百度| 天天做天天爱天天高潮| 热久久精品免费视频| 精品久久久久久无码中文野结衣| 国产精品久久久久久9999| 不卡av免费在线| 女人天堂av手机在线| 中国丰满熟妇xxxx性| 国产系列第一页| 亚洲午夜激情影院| 污色网站在线观看| 女人另类性混交zo| 欧美三级在线观看视频| 2018中文字幕第一页| 欧美日韩一区二区三区电影| 中文字幕永久有效| 国产主播在线看| 你懂的av在线| 国产精品12345| 福利视频免费在线观看| 中国一级黄色录像| 日本黄色a视频| 91插插插影院| www.污污视频| 97人人爽人人| 午夜视频在线网站| 手机版av在线| 五月天婷婷影视| 成人日韩在线视频| 国产精品一区二区小说| 在线免费av播放| 亚洲色图 在线视频| 国产一区二区在线免费播放| 欧美 日韩 亚洲 一区| 久久久久免费看黄a片app| 波多野结衣av一区二区全免费观看| 国产日产欧美一区二区| 999久久欧美人妻一区二区| 特大黑人娇小亚洲女mp4| 欧美在线观看黄| 日韩在线观看a| 国产中文字幕二区| 日本熟妇人妻xxxxx| 99精品视频播放| 在线观看av网页| 亚洲三级在线观看视频| 福利网在线观看| 国产人妻人伦精品| av免费看网址| 国产一级片黄色| 91小视频网站| 欧美日韩理论片| 男女激情免费视频| 亚洲色成人一区二区三区小说| 亚洲熟妇av一区二区三区| 亚洲最大成人在线观看| 91性高潮久久久久久久| 真实国产乱子伦对白视频| 男人揉女人奶房视频60分| 五月婷婷狠狠操| 艳母动漫在线观看| 色欲色香天天天综合网www| 激情网站五月天| 九九九九九九九九| 国产天堂视频在线观看| 92看片淫黄大片一级| 久久婷五月综合| 视色,视色影院,视色影库,视色网| 国产主播自拍av| 91香蕉视频污版| 国产精品夜夜夜爽张柏芝| 成人一级生活片| 日韩视频免费在线播放| 日韩欧美中文在线视频| 妞干网在线视频观看| 黄色手机在线视频| 久久手机在线视频| 激情视频免费网站| 毛片在线视频观看| 少妇高清精品毛片在线视频| 中文字幕线观看| 分分操这里只有精品| 欧美视频免费播放| 樱空桃在线播放| 已婚少妇美妙人妻系列| 成人手机视频在线| 精品欧美一区免费观看α√| 日韩av一卡二卡三卡| 精品无码一区二区三区在线| 国产一二三区av| 青青青青在线视频| 欧美日韩精品区别| 成人免费在线小视频| 日本高清免费观看| 成人免费视频久久| 国产精品美女在线播放| 午夜肉伦伦影院| 精品日韩在线播放| wwwwxxxx日韩| 人妻av无码专区| 污污的视频免费观看| 欧美精品久久久久久久久久久| 美女在线视频一区二区| 国产成人在线免费看| 欧美日韩在线免费观看视频| 国模吧无码一区二区三区| 97超碰免费观看| av污在线观看| 无码播放一区二区三区| 国产香蕉一区二区三区| 久久国产这里只有精品| 国产精品无码av在线播放| 麻豆传媒网站在线观看| www.午夜av| 无人在线观看的免费高清视频 | 中文字幕综合在线观看| 青青视频在线播放| 91传媒免费视频| 成年网站在线播放| 国产二级片在线观看| 欧美日韩视频免费在线观看| 亚洲精品性视频| 黄色免费网址大全| 国产最新免费视频| 欧美一级片免费播放| 一级性生活视频| 一级日本黄色片| 在线a免费观看| 婷婷激情综合五月天| 日本免费色视频| 91激情视频在线| www日韩视频| 久久久久久久久久福利| 男人天堂999| 成人综合视频在线| 中国丰满人妻videoshd| 91精品91久久久中77777老牛| 国内精品在线观看视频| 久久这里只有精品23| 欧美大片在线播放| 欧美老熟妇喷水| 妺妺窝人体色www在线小说| 久久无码高潮喷水| 91传媒久久久| 男女高潮又爽又黄又无遮挡| 成人在线免费在线观看| 岳毛多又紧做起爽| 九九视频精品在线观看| 在线能看的av网站| 在线观看岛国av| 亚洲制服中文字幕| 欧美三级午夜理伦三级老人| 国产免费xxx| 久青草视频在线播放| 国产青青在线视频| 日本成人黄色网| 免费看涩涩视频| 激情在线观看视频| 干日本少妇视频| www.日本少妇| 日本熟妇人妻xxxxx| 在线观看免费污视频| 黄色www在线观看| 国产欧美日韩小视频| 日韩激情免费视频| 9久久婷婷国产综合精品性色 | 国产精品人人妻人人爽人人牛| 亚洲爆乳无码专区| 国产原创精品在线| 天堂v在线视频| 夜夜添无码一区二区三区| 亚洲中文字幕无码不卡电影| 男人插女人下面免费视频| 国产在线观看中文字幕| 欧美黄网在线观看| 亚洲中文字幕无码不卡电影| 色婷婷一区二区三区av免费看| 裸体裸乳免费看| 欧美日韩在线一| 性生生活大片免费看视频| 久久这里只有精品8| 日本精品久久久久中文字幕| 中文字幕 日韩 欧美| 久久手机在线视频| 天堂中文视频在线| 性欧美18一19内谢| 欧美黄网站在线观看|