Unpacking mortality in Alzheimer's and pneumonia: key considerations for future analysis

This letter comments on the recent study by Javaid et al. regarding mortality trends at the nexus of pneumonia and Alzheimer's disease (AD). While acknowledging the study's important contributions to identifying public health disparities, we propose three key analytical refinements to build upon their findings. First, we advocate for stratifying the analysis by the underlying cause of death (UCD) to better distinguish the causal pathways between neurodegeneration and terminal infection. Second, we highlight the necessity of extending the analysis beyond 2020 to assess the full, long-term impact of the COVID-19 pandemic and vaccination on this vulnerable population. Third, we suggest employing a granular, intersectional analysis focusing on long-term care facilities (LTCFs) to identify specific "hotspots" of vulnerability by examining the interplay of race, geography, and place of death. These proposed directions are crucial for developing more precise, evidence-based public health strategies to protect older adults at the complex intersection of dementia and severe infection.