A medical worker conducts a nucleic acid test for a child in Dalian, Liaoning province, on July 30, 2020. [Photo/China Daily]
The incubation period for COVID-19, the time between exposure to the virus and the onset of symptoms, is about three to seven days for most people and can be up to 14 days, during which these pre-symptomatic patients can be contagious, according to China's latest national guideline on the diagnosis and treatment of COVID-19 published on Wednesday.
8月19日,我國發布最新一版新冠肺炎診療方案,方案提出,新冠肺炎的潛伏期(感染病毒到出現症狀之前)多為3-7天,最長可達14天,潛伏期即有傳染性。
The five days after symptoms occur are when the disease becomes highly transmissible, the guideline said.
發病後5天內傳染性較強。
Respiratory droplets and close contact with infected patients are the primary methods of transmission, and exposure to virus-contaminated objects can also cause infection.
經呼吸道飛沫和密切接觸傳播是主要的傳播途徑。
In terms of the effect of the novel coronavirus on the body, the virus can damage the lungs, spleen, bone marrow, cardiovascular system, liver, kidney, brain and digestive tracts.
接觸病毒汙染的物品也可造成感染。在新冠病毒對身體的病理改變方面,方案指出,病毒會對肺臟、脾臟、骨髓、心血管系統、肝臟、腎臟、腦組織以及消化道等器官和組織產生破壞作用。