Category Archives: Science

How did China get to grips with its coronavirus outbreak?

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World is looking at Beijing to see what lessons can be learned as new cases of infections fall

As coronavirus infections around the world rise, the number of new cases in China has plummeted dramatically, prompting some observers to look to Beijing for lessons.

In recent days, the number of daily new cases in China has gone from almost 2,000 less than three weeks ago to under 100. On Monday, China’s national health commission reported 40 new cases, its lowest daily since authorities began tracking the outbreak in January. According to the official figures, new infections in the rest of China, outside of Hubei province which has been hardest hit, have almost completely stopped.

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Coronavirus symptoms: what are they and should I see a doctor?

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What are the symptoms caused by the virus from Wuhan in China, how does it spread, and should you call a doctor?

It is caused by a member of the coronavirus family that has never been encountered before. Like other coronaviruses, it has come from animals. Many of those initially infected either worked or frequently shopped in the Huanan seafood wholesale market in the centre of the Chinese city.

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Can a face mask stop it spreading? Coronavirus facts checked

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The truth about how easy it is to catch Covid-19, who is vulnerable and what you can do to avoid infection

Wearing a face mask is certainly not an iron-clad guarantee that you won’t get sick – viruses can also transmit through the eyes and tiny viral particles, known as aerosols, can penetrate masks. However, masks are effective at capturing droplets, which is a main transmission route of coronavirus, and some studies have estimated a roughly fivefold protection versus no barrier alone (although others have found lower levels of effectiveness).

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Coronavirus: nine reasons to be reassured

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Yes, Covid-19 is serious, but context is key and the world is well placed to deal with it

The coronavirus epidemic plainly poses an exceptionally serious global problem: in a few short weeks, it has spread from China to more than 80 countries, infecting more than 100,000 people so far and causing more than 3,400 deaths.

But as we are hit with minute-by-minute updates from around the world, experiencing the advance of Covid-19 in real time – news alerts, huge headlines, social media hysteria – there’s a risk that we might lose some essential context.

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Before and after: coronavirus empties world’s busiest spaces

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Aerial images reveal impact of outbreak on famous holy sites and capital cities

Empty public squares, a highway with no cars on it and deserted holy sites – a series of striking satellite images have revealed the impact of the coronavirus epidemic on some of the world’s busiest spaces.

The aerial photographs, released by Colorado-based space technology firm Maxar, show normally bustling spots from Mecca to Beijing thinned of people.

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Inside the cruise ship that became a coronavirus breeding ground

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As contagion swept through the Diamond Princess, its crew had to carry on working. Here, they recall the climate of chaos and fear that prevailed during the ship’s two-week quarantine

Christian Santos* remembers staying awake at night, anxiously listening to the sound of his colleague coughing. They were sleeping below deck, in one of the small rooms shared by workers on board the stricken Diamond Princess cruise ship.

He had spent the previous two weeks serving guests who were confined to their rooms, and watching the miserable failure of disease-control measures on the vessel. Now he knew the coronavirus, which had already transmitted to hundreds of people onboard, had almost certainly entered his own cabin.

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Coronavirus latest updates: Italy death toll nears 200 with almost 4,000 cases

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First cases reported in Vatican City, Peru and Serbia, while France has further 190 patients, bringing total number to 613

If you’d like to read a summary of the day’s events, here’s our coronavirus at-a-glance article from earlier this evening:

Related: Coronavirus latest: at a glance

A 15th person has died in the USA, according to a hospital in Washington state – the worst-hit in the union. EvergreenHealth Medical Center in the Seattle suburb of Kirkland has reported the state’s 12 death.

Kirkland is the site of an outbreak at a nursing facility, where at least six people have died.

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Chinese police place Britons in enforced isolation after ferry trip

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Teacher was given 20 minutes to pack and must remain in hotel room for two weeks

Jo Davison and her partner were relaxing in their flat in Shenzhen, China, when the phone rang. She was told by the Chinese authorities that they had been exposed to the coronavirus at close proximity and that officials were on their way.

“It was terrifying. Five people in hazmats turned up at our apartment, they looked like ghostbusters,” she said. “They took swabs from our nose and throat and said they’d return in the morning so we should start packing.”

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Is coronavirus mutating into a more deadly strain? Covid-19 myths busted

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The truth about the protective value of face masks and whether it’s easy to catch Covid-19

All viruses accumulate mutations over time and the virus that causes Covid-19 is no different. How widespread different strains of a virus become depends on natural selection – the versions that can propagate quickest and replicate effectively in the body will be the most “successful”. This doesn’t necessarily mean most dangerous for people though, as viruses that kill people rapidly or make them so sick that they are incapacitated may be less likely to be transmitted.

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Coronavirus symptoms: what are they and should I go to the doctors?

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What are the symptoms caused by the virus from Wuhan in China, how does it spread, and should you call a doctor?

It is caused by a member of the coronavirus family that has never been encountered before. Like other coronaviruses, it has come from animals. Many of those initially infected either worked or frequently shopped in the Huanan seafood wholesale market in the centre of the Chinese city.

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Coronavirus: Iran to limit travel between major cities amid more than 3,500 cases – latest updates

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California declares state of emergency; Italian doctors say German man may have been first European with virus and Scotland registers three more cases

The UK’s Competition and Markets Authority (CMA) issued a statement warning businesses to not exploit the coronavirus outbreak and take advantage of people. The CMA said it will take enforcement action against companies that are charging excessive prices or making misleading claims about the efficacy of protective equipment.

CMA chairman Lord Tyrie said: “We will do whatever we can to act against rip-offs and misleading claims, using any or all of our tools; and where we can’t act, we’ll advise government on further steps they could take, if necessary.”

Here’s the latest summary of today’s events.

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This winter in Europe was hottest on record by far, say scientists

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Climate crisis likely to have supercharged temperatures around world, data suggests

The winter just experienced by Europe was by far the hottest on record, scientists have announced, with the climate crisis likely to have supercharged the heat.

The EU’s Copernicus Climate Change Service (C3S) data dates back to 1855. It said the average temperature for December, January and February was 1.4C above the previous winter record, which was set in 2015-16. New regional climate records are usually passed by only a fraction of a degree. Europe’s winter was 3.4C hotter than the average from 1981-2010.

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Coronavirus live updates: number of confirmed cases in UK jumps to 85

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More cases in Scotland and Ireland, Italians in India test positive while Facebook says it will take down hoax claims

Two groups of Italian tourists were under quarantine in India today, with 16 testing positive for the coronavirus, prompting authorities to tighten controls.

Health minister Harsh Vardhan said that passengers on all international flights would now be screened, the AFP news agency reported.

This seems to be emerging a bit of a trend. Footage has appeared showing Iranian health workers dancing and singing in an effort to keep morale up as the country faces the worst coronavirus outbreak outside China.

Videos of medical staff and #coronavirus patients square dancing together in several "shelter hospitals" in #Wuhan have gone viral on Chinese social media.

"Square dancing helps to cheer them up and improve their immunity, which is beneficial for their recovery." pic.twitter.com/Kpqsyqclkj

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New Zealand records second coronavirus case in woman arriving from Italy

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The partner of the woman, who flew to Auckland via Singapore and is now in isolation, is also showing symptoms and is being tested

A second case of coronavirus has been confirmed in New Zealand, with the infected woman having recently arrived in the country from Italy.

The latest infection is a New Zealand citizen, a woman in her early 30s who recently returned from a trip to northern Italy and rapidly became ill.

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Mystery of lifespan gap between sexes may be solved, say researchers

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Study finds chromosomes offer clue to longer life of different sexes in different species

From humans to black-tailed prairie dogs, female mammals often outlive males – but for birds, the reverse is true.

Now researchers say they have cracked the mystery, revealing that having two copies of the same sex chromosome is associated with having a longer lifespan, suggesting the second copy offers a protective effect.

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Four lessons the Spanish flu can teach us about coronavirus

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Up to 100 million people died in 1918-19 in the world’s deadliest pandemic. What can we learn?

Spanish flu is estimated to have killed between 50 million and 100 million people when it swept the globe in 1918-19 – more than double the number killed in the first world war. Two-thirds of its victims died in a three-month period and most were aged 18-49. So what lessons has the world’s deadliest pandemic taught us?

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Explained: UK’s coronavirus action plan

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What the government’s measures to fight the spread of Covid-19 mean in practice

Publicity

Publicity will be increased about the need for good hygiene measures (handwashing and “catch it, bin it, kill it”) and for workers to stay at home for the full duration of their illness.

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Earth may have been a ‘water world’ 3bn years ago, scientists find

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Chemical signatures in ancient ocean crust point to a planet without continents

Scientists have found evidence that Earth was covered by a global ocean that turned the planet into a “water world” more than 3bn years ago.

Telltale chemical signatures were spotted in an ancient chunk of ocean crust which point to a planet once devoid of continents, the largest landmasses on Earth.

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World’s beaches disappearing due to climate crisis – study

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UK on course to lose a quarter of its sandy coast because of human-driven erosion

Almost half of the world’s sandy beaches will have retreated significantly by the end of the century as a result of climate-driven coastal flooding and human interference, according to new research.

The sand erosion will endanger wildlife and could inflict a heavy toll on coastal settlements that will no longer have buffer zones to protect them from rising sea levels and storm surges. In addition, measures by governments to mitigate against the damage are predicted to become increasingly expensive and in some cases unsustainable.

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