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Articles sur SARS-CoV-2

Affichage de 221 à 240 de 583 articles

A security guard leads reporters away from the Wuhan Institute of Virology after a WHO team arrived for a field visit in Wuhan, Hubei province of China, Feb. 3, 2021. The team came to no conclusions about the origins of the pandemic. (AP Photo/Ng Han Guan)

Origins of SARS-CoV-2: Why the lab-leak idea is being considered again

Gain-of-function studies make a natural virus more dangerous or transmissible to humans. Could the Wuhan Institute of Virology be the source of SARS-CoV-2?
To stop the spread of COVID-19 across the globe, it’s important to understand the evolutionary imperative that viruses have to spread their genetic material. Dazeley/Getty Images

Think like a virus to understand why the pandemic isn’t over yet – and what the US needs to do to help other countries

Viruses want to pass on their genetic material. Recognizing this about SARS-CoV-2 provides insight into how the world is still vulnerable to COVID-19.
Vaccinated people are well protected from getting sick, but could they inadvertently transmit the coronavirus? Noam Galai/Getty Images Entertainment via Getty Images

Can people vaccinated against COVID-19 still spread the coronavirus?

The COVID-19 vaccines are a smash success. But that doesn’t mean they keep every vaccinated person completely free of the coronavirus.
A healthcare worker performs a nasal swab as he tests a woman for COVID-19 in Bamako, Mali. Annie Risemberg/AFP via Getty Images

Poor nutrition changes the way a body fights infection: this might protect against severe COVID-19

Deficient leptin levels caused by malnutrition might protect against severe COVID-19 and related death. This could be another reason for the lower than expected COVID-19 deaths in Africa.
Muslim worshippers perform the evening Tarawih prayer during the fasting month of Ramadan around the Kaaba in the Grand Mosque complex in the holy city of Mecca, on April 13, 2021. AFP via Getty Images

Pilgrimage in a pandemic: lessons from Mecca on containing COVID-19

Entertainment, sports and tourism industries can learn valuable lessons from how Saudi Arabia managed the annual pilgrimage during a pandemic.
Sequencing the whole genome of patient virus samples lets scientists watch for new variants. Sergei Malgavko/TASS via Getty Images

Where coronavirus variants emerge, surges follow – new research suggests how genomic surveillance can be an early warning system

By merging genomics with classical epidemiology, researchers are able to predict new disease outbreaks based on which viral variants are on the rise.

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