S. Fujisaki

This study investigates reinfection with SARS-CoV-2 Omicron variants in previously infected hamsters, finding that immunity prevents pneumonia but allows viral replication in the upper airways with increased mutation diversity.

This study shows that cynomolgus monkeys with lower peripheral T cell counts experience more severe pneumonia after SARS-CoV-2 infection compared to those with higher T cell counts.

This study develops a forecasting framework for influenza A/H3N2 evolution by integrating phenotypic antigenic drift data with sequence-based fitness estimates, showing improved long-term predictions.