Why vaccines are less effective in the elderly, and what it means for COVID-19

Why vaccines are less effective in the elderly, and what it means for COVID-19: As the global spread of severe acute respiratory syndrome coronavirus (SARS-CoV-2) — the cause of COVID-19 — continues, we learn more about the effects of this new virus. For many respiratory pathogens, including influenza viruses and respiratory syncytial viruses, the elderly experience the most severe forms of disease and the highest death rates. For example, […]