新冠患病初期傳染性強

Most infectious at 1st signs
新冠患病初期傳染性強

Studies show people with the novel coronavirus are most infectious just at the point when they first begin to feel unwell, World Health Organization (WHO) experts said on Tuesday.
世界衛生組織專家6月9日稱，研究顯示，新冠病毒患者一開始感到身體不適時最具傳染性。

This feature has made it so hard to control spread of the virus that causes COVID-19, but it can be done through rigorous testing and social distancing, they said.
這一特點使得控制新冠病毒傳播非常困難，但仍可通過嚴格檢測和社交距離得以實現。

"It appears from very limited information we have right now that people have more virus in their body at or around the time that they develop symptoms," said Maria van Kerkhove, a WHO epidemiologist.
世衛組織流行病學家範克爾克霍夫稱，就我們目前掌握的非常有限的資料看，人們在出現症狀前後，體內的病毒量更多。

Preliminary studies from Germany and the US suggest that people with mild symptoms can be infectious for up to 8-9 days, and "it can be a lot longer for people who are more severely ill", she said.
德國和美國的初步研究表明，出現輕微病徵的患者的傳染力可持續8-9天，而情況更嚴重患者的傳染期可能更長。

Mike Ryan, WHO's top emergencies expert, said that the novel coronavirus lodges in the upper respiratory tract, making it easier to transmit by droplets than related viruses such as SARS or MERS, which are in the lower tract.
世衛組織頂級緊急事務專家邁克·瑞安表示，新冠病毒存在於上呼吸道，這使它比存在於下呼吸道的非典型性肺炎或中東呼吸綜合症等相關病毒更容易通過飛沫傳播。