A Plant That ‘Cannot Die’ Reveals Its Genetic Secrets

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Events in the genome of Welwitschia have given it the ability to survive in an unforgiving desert for thousands of years. Tags: suchen suche search tag anzeigen besucherzahl browser design domain inhalt jahr karpfen konto […]

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Vaccinated People May Spread the Virus, Though Rarely, C.D.C. Reports

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The agency cited an outbreak in Provincetown, Mass., in which most of the infected were immunized. An internal C.D.C. document paints an even more harrowing picture. Tags: suchen suche search tag anzeigen besucherzahl browser design […]



C.D.C. Says Some Vaccinated Americans Should Wear Masks Again

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In communities with growing caseloads, vaccinated and unvaccinated people should return to wearing masks indoors in public areas, health officials said.



As Virus Cases Rise, Another Contagion Spreads Among the Vaccinated: Anger

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Frustrated by the prospect of a new surge, many Americans are blaming the unvaccinated. A tougher stance may backfire, some experts warn.



Why Vaccinated People Are Getting ‘Breakthrough’ Infections

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The vaccines are effective at preventing serious illness and death, but they are not a golden shield against the coronavirus.



Covid-19 Delta Variant Widens Gulf Between Vaccinated and Unvaccinated

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Data from overseas, particularly Britain, suggest the spread of the virus will set vaccinated and unvaccinated communities on very different paths.



F.D.A. Attaches Warning of Rare Nerve Syndrome to Johnson & Johnson Covid Vaccine

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Federal regulators concluded that the risk of developing the syndrome was low, and that the benefits of the vaccine still strongly outweigh it.