Les laboratoires Pfizer et BioNTech annoncent ce mercredi dans un communiqué que leur vaccin contre la Covid-19 est efficace à 95% selon des résultats ...
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Top government scientist says COVID-19 patients would require two doses, three weeks apart and 'a low-temperature carriage' requirement makes it all the more ...
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US health officials told lawmakers Wednesday that new infections are affecting younger people and public health guidelines need to be followed
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A date for the talks, to be hosted in Doha, has not been set but the warring sides have this week made signals that negotiations could launch soon
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