SARS-CoV-2, the virus causing Covid-19, can last in the lungs of certain individuals for up to 18 months after infection, finds a...
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A team of US researchers has detected at least four "cryptic" variants of SARS-CoV-2, the virus that causes Covid-19, in samples of wastewater from New...
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Pharma companies have failed to provide essential medicines to patients in poor countries, where the risk of drug-resistant infections is...
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