.fperrywilson reviews a recent study suggesting that neutralizing antibodies to coronavirus after COVID infection persist for at least a year in kids, and that reinfection rates may be lower in kids than adults.
Of course, the pandemic has changed that question a bit, to: Why can we get reinfected with the coronavirus?came across my desk. It's, fundamentally, a study about coronavirus antibodies, but it is special due to three factors.
In Singapore, 126 kids took part in the study. They all had neutralizing antibody levels measured within 1 month after a coronavirus infection. None of these kids had yet been vaccinated. The authors then did their best to follow the kids over time, measuring antibody levels at 1-3 months, 9-13 months, and 14-16 months later.
You can see that there was really no difference between boys and girls, or even among those with or without symptomatic infection.While older kids mounted less of an initial neutralizing antibody response than younger kids, levels quickly achieved parity.Let's put this study into a broader context. After the Omicron wave, there are vanishingly few kids who have no immunologic record of SARS-CoV-2, either through vaccination or, increasingly, infection.
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