Kid's Colds May Provide Immunity to Covid-19

As predicted:
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The researchers then looked at 300 blood samples collected pre-pandemic, and found that nearly all of those individuals had antibodies that protect against coronaviruses that cause the common cold. (There are many different strains of coronaviruses, some of which cause the common cold.)

In addition, around 5% of the adults had antibodies that would “recognize” SARS-CoV-2 even if they hadn’t had a cold around the time their blood was drawn. And 7% of the adults who had recently come down with a cold had similar antibodies.

Perhaps even more striking: Nearly half of the children in the small study had antibodies that would recognize SARS-CoV-2.