COVID-19 portal v t e The COVID-19 pandemic, also known as the coronavirus pandemic, is a global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identified in an outbreak in the Chinese city of Wuhan in December 2019.
- 6,956,160 (reported), 17.5–31.4 million (estimated)
- Worldwide
- Coronavirus disease 2019 (COVID-19)
- Severe acute respiratory syndromecoronavirus 2 (SARS‑CoV‑2)
COVID-19 Coronavirus disease 2019 ( COVID-19) is a contagious disease caused by the virus SARS-CoV-2. The first known case was identified in Wuhan, China, in December 2019. [6] The disease quickly spread worldwide, resulting in the COVID-19 pandemic .
- 6,956,160 (reported), 17.6–31.4 million (estimated)
- SARS-CoV-2
- 2–14 days (typically 5), after infection
- Symptomatic and supportive
- History
- Levels
- List of BSL-4 Facilities
- Safety Concerns
- See Also
- External Links
The first prototype Class III (maximum containment) biosafety cabinet was fashioned in 1943 by Hubert Kaempf Jr., then a U.S. Army soldier, under the direction of Arnold G. Wedum, Director (1944–69) of Industrial Health and Safety at the United States Army Biological Warfare Laboratories, Camp Detrick, Maryland. Kaempf was tired of his MPduties at ...
Biosafety level 1
Biosafety level 1 (BSL-1) is suitable for work with well-characterized agents which do not cause disease in healthy humans. In general, these agents should pose minimal potential hazard to laboratory personnel and the environment. At this level, precautions are limited relative to other levels. Laboratory personnel must wash their hands upon entering and exiting the lab. Research with these agents may be performed on standard open laboratory benches without the use of special containment equi...
Biosafety level 2
At this level, all precautions used at Biosafety Level 1 are followed, and some additional precautions are taken. BSL-2 differs from BSL-1 in that: 1. "laboratory personnel have specific training in handling pathogenic agents and are directed by competent scientists." 2. Access to the laboratory is limited when work is being conducted. 3. Certain procedures in which infectious aerosols or splashes may be created are conducted in biological safety cabinetsor other physical containment equipmen...
Biosafety level 3
Biosafety level 3 is appropriate for work involving microbes which can cause serious and potentially lethal disease via the inhalation route. This type of work can be done in clinical, diagnostic, teaching, research, or production facilities.Here, the precautions undertaken in BSL-1 and BSL-2 labs are followed, as well as additional measures including: 1. A laboratory-specific biosafety manual must be drafted which details how the laboratory will operate in compliance with all safety requirem...
According to a U.S. Government Accountability Office (GAO) report published on 4 October 2007, a total of 1,356 CDC/USDA registered BSL-3 facilities were identified throughout the United States. Approximately 36% of these laboratories are located in academia. 15 BSL-4 facilities were identified in the U.S. in 2007, including nine at federal labs.As...
A North Carolina Mosquito & Vector Control Association (NCMVCA) study highlighted safety concerns. In the United States, laboratories can be funded by federal, state, private, non-profit, or academically. The last accounts for 72% of the funding. High-containment labs that are registered with the Centers for Disease Control and Prevention (CDC) and...
The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2, [1] the virus that causes the coronavirus disease 2019 ( COVID-19) and is responsible for the COVID-19 pandemic . The first human cases of COVID-19 were identified in Wuhan, People's Republic of China, in December 2019. [2]
Sulfur (also spelled sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S 8. Elemental sulfur is a bright yellow, crystalline solid at room temperature .
- sulphur (British spelling)
- see Allotropes of sulfur
- 16
- lemon yellow sintered microcrystals
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time -related data. It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. [1]
The World Health Organization ( WHO) is a specialized agency of the United Nations responsible for international public health. [2] It is headquartered in Geneva, Switzerland and has six regional offices and 150 field offices worldwide. [3] The WHO was established on 7 April 1948 and convened its first meeting on 24 July of that year.
Yahoo奇摩 網頁搜尋
約 829,000 項搜尋結果
