T cells found in healthy people before pandemic may help fight coronavirus, study says

Some people in the United States were carrying immune cells that could recognise or attack the new virus strain as far back as five years ago, likely after being infected with other coronaviruses, according to a new study.Alessandro Sette and a team at the La Jolla Institute for Immunology in San Diego, California found both helper and killer T cells – that can target the virus – in healthy volunteers.But the volunteers could not have been exposed to the new strain, according to the researchers…

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