Fig. 2: Evolution of research–disease divergence and share of research and disease burden for respiratory infections and tuberculosis.
From: Global distribution of research efforts, disease burden, and impact of US public funding withdrawal
a, Evolution of research–disease divergence for the years 1999–2021. Research–disease divergence (KLD) of global research share versus global DALY share for each disease category and each year, based on 8.6 million disease-specific research articles across 16 level-2 disease causes. b, Share of research and disease burden for respiratory infections and tuberculosis for the years 2019–2021. Share DALYs (red bars) versus share research articles (blue bars) for respiratory infections and tuberculosis as the percentage of global DALYs and global research in the respective years, based on 174,654 research articles focused on respiratory infections and tuberculosis (including COVID-19) for the years 2019–2021.
