Learn how to protect yourself from COVID-19. Learn what you need to know about COVID-19 testing. Learn about the types of COVID-19 treatments, symptom management, and recovery. Information for healthcare workers about COVID-19. Guidance, tools, and resources for health departments to address COVID-19.

COVID-19, also called coronavirus disease 2019, is an illness caused by a virus. The virus is called severe acute respiratory syndrome coronavirus 2, or more commonly, SARS-CoV-2. It started spreading at the end of 2019 and became a pandemic disease in 2020.

2019冠状病毒病 （英語： Coronavirus disease 2019，缩写： COVID-19[17][18]），是一種由 嚴重急性呼吸系統綜合症冠狀病毒2型 （縮寫：SARS-CoV-2）引發的 傳染病，导致了一场持续的 疫情，成为人類歷史上 致死人數最多的流行病之一。 該病已知的 首名病人 2019年末於 中華人民共和國 湖北省 武漢市 [19][註 1] 确诊，其后此病在全球范围内陆续被检测出。 截至2023年3月10日，全球各國的官方通報已累计报告逾6.76亿名确诊病例、逾 688.1万名患者死亡 [5]。 2023年5 …

In January 2020, the World Health Organization(WHO) recommended 2019-nCoV[35]and 2019-nCoV acute respiratory disease[36]as interim names for the virus and disease per 2015 guidance and international guidelines against using geographical locations or groups of people in disease and virus names to prevent social stigma.

2025年3月10日 · People with COVID-19 have a wide range of symptoms ranging from mild symptoms to severe illness. Symptoms may appear 2-14 days after exposure to the virus. Symptoms may start as mild, and some people will progress to more severe symptoms.

2025年3月17日 · Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and recover without requiring special treatment. However, some will become seriously ill and require medical attention.

What is COVID-19? COVID-19 is the disease caused by SARS-CoV-2, the coronavirus that emerged in December 2019. Coronaviruses are a type of virus. There are many different kinds, and some, like COVID-19, cause disease and sometimes death.

2023年8月9日 · 任何人都有可能感染COVID-19，并且有可能引起严重疾病或死亡，但大多数人无需治疗即可康复。 60岁以上的老年人和有基础疾病的患者患重症风险更高。 这些疾病包括高血压、糖尿病、肥胖症、包括艾滋病毒在内的免疫抑制、癌症和妊娠。 未接种疫苗者出现重症风险也比较高。 人们在感染COVID-19后可能会出现不同症状。 症状通常会在感染后5-6天开始出现，并持续1-14天。 最常见的症状是： 喉咙痛。 不太常见的症状包括： 睡眠困难。 出现以下症状的 …

COVID-19 (coronavirus disease 2019) is a disease caused by the SARS-CoV-2 virus. It can be very contagious and can spread quickly. COVID-19 most often causes respiratory symptoms that can feel much like a cold, the flu, or pneumonia. COVID-19 may attack more than your lungs and respiratory system.

世卫组织正与全球各地专家、政府和合作伙伴密切协作，以迅速充实关于这一新型病毒的科学知识，跟踪病毒的传播和毒性，并建议各国和个人如何采取措施保护健康和防止疫情蔓延。 请访 …