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coronavirus

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The covid-19 virus affects our gut – but we still don't know how

The coronavirus commonly causes gastrointestinal symptoms, but whether this is due to inflammation, disruption to our microbiome or the virus affecting the permeability of our gut wall is unclear

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A scanning electron micrograph of the delta SARS-CoV-2 variant (pink dots) budding from a human gut cell

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Covid-19 may have started in raccoon dogs, new DNA evidence shows

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A raccoon dog (Nyctereutes procyonoides)

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Lion infected with covid-19 probably passed it on to two zoo workers

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Big cats, such as lions and tigers, have tested positive for the coronavirus before, but this is the first known case of a lion probably transmitting the infection to zoo workers
In severe cases, Streptococcus pneumoniae bacteria can cause pneumonia and serious blood infections

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Covid-19 pandemic tied to antibiotic resistance in pneumonia bacterium

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SARS-CoV-2 could evolve into new variants that may evade existing vaccines

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Inhaled powder that coats airways can block coronavirus infection

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The coronavirus is continuing to mutate as it spreads

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Millions of coronavirus mutations offer a new insight into evolution

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Researchers have suggested that monitoring audio clips on social media could be a relatively quick, inexpensive way of tracking coronavirus cases in the community

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AI detects if YouTubers are infected with omicron coronavirus variant

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People queue up to receive the Medigen and Moderna vaccines for the Covid-19 coronavirus at Taipei's main train station on April 29, 2022. (Photo by Sam Yeh / AFP) (Photo by SAM YEH/AFP via Getty Images)

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Why we probably won't get new covid-19 vaccines in 2023

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A child sitting in a hospital bed

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Why are children catching so many illnesses this winter?

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Technology

Biggest science news stories of 2022 as chosen by New Scientist

Nuclear fusion, infectious diseases and an incredible new space telescope were ongoing stories in 2022, but what were some of the other big scientific developments, discoveries and events of the year?

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Nuclear power plant

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The covid-19 pandemic’s third year saw countries adopt new approaches

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Nearly 15 million excess deaths occurred globally in 2020 and 2021

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Drug that targets ACE2 receptors may work against new covid variants

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Do we have 'immunity debt' and how could it affect our infection risk?

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