PITTSBURGH– An analysis of adults who recovered from moderate COVID-19 found that those under the age of 30 had lower neutralizing antibody levels than older people, suggesting that younger individuals may be less protected from a second infection.

The findings, posted to the preprint website medRxiv and announced today, ahead of peer-reviewed publication, indicate that vaccination is important even for young adults who have previously been infected with the SARS-CoV-2 virus.