1/New Peer-reviewed Canadian study in Journal of Clinical Investigation Insight: "Majority of uninfected adults show pre-existing antibody reactivity against SARSCoV2"
"Pre-existing cross-reactivity to SARSCoV2 occurs in absence of prior viral exposure"
2/ “>90% of uninfected adults showed antibody reactivity against SARSCoV2. This seroreactivity was evenly distributed across age & sex, correlated with circulating coronaviruses’ reactivity.. We conclude most adults display pre-existing antibody cross-reactivity against SARSCoV2″
3/ "The presence of pre-existing SARSCoV2 antibody reactivity in uninfected individuals in the current study is consistent with the detection of Tcell reactivity against SARSCoV2 in about 40% of uninfected individuals."