id=”article-body” class=”row” section=”article-body”> Robert Rodriguez/CNET Health officials around the world continue to battle an outbreak of respiratory disease, first detected in the central Chinese city of Wuhan in December. The causative agent was traced to a novel coronavirus, dubbed SARS-CoV-2, which has now infected more than 70,000 people in China and claimed over 1,700 lives.
The spate of illness was first reported to the World Health Organization on New Year’s Eve and in the following weeks was linked to a family of viruses known as coronaviruses, the same family responsible for the diseases SARS and MERS, as well as some cases of the common cold. On Feb. 11, WHO and other organizations agreed to name the new illness COVID-19 (for “coronavirus disease 2019”).
A special WHO committee declared a public health emergency on Jan. 30, citing “the potential for the virus to spread to countries with weaker health systems.” Human-to-human transmission has been confirmed, including in the US, and authorities around the world have limited travel and enforced quarantines to guard against the spread.
Some of the world’s largest tech firms have been adversely affected by the outbreak, shutting down stores and factories in China. Barcelona’s Mobile World Congress, the world’s largest phone trade show, took the unprecedented step of cancelling the entire show on Feb. 12 due to growing concerns over the spread of the coronavirus.
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The situation continues to evolve as more information becomes available. We’ve collated everything we know about the novel virus, what’s next for researchers and some of the steps you can take to reduce your risk.
What is a coronavirus?
Where did the virus come from?
How many confirmed cases have been reported?
How many deaths have been reported?
How do we know it’s a new coronavirus?
How does the coronavirus spread?
How infectious is coronavirus?
What are the symptoms of the coronavirus?
Is there a treatment for coronavirus?
How to reduce your risk of coronavirus
Now playing: Watch this: Deadly coronavirus detected in the US 1:41 What is a coronavirus?
Coronaviruses belong to a family known as Coronaviridae, and under an electron microscope they look like spiked rings. They’re named for these spikes, which form a halo or “crown” (corona is Latin for 우리카지노 crown) around their viral envelope.
Coronaviruses contain a single strand of RNA (as opposed to DNA, which is double-stranded) within the envelope and, as a virus, can’t reproduce without getting inside living cells and hijacking their machinery. The spikes on the viral envelope help coronaviruses bind to cells, which gives them a way in, like blasting a door open with C4. Once inside, 우리카지노 they turn the cell into a virus factory — the RNA and some enzymes use the cell’s molecular machinery to produce more viruses, which are then shipped out of the cell to infect other cells. Thus, the cycle starts anew.