COVID-19 Forecasting Team. Variation in the COVID-19 infection–fatality ratio by age, time, and geography during the pre-vaccine era: a systematic analysis. The Lancet. 24 February 2022. doi: 10.1016/S0140-6736(21)02867-1.
Ikilezi G, Micah AE, Bachmeier SD, Cogswell IE, Maddison ER, Stutzman HN, Tsakalos G, Brenzel L, Dieleman JL. Estimating total spending by source of funding on routine and supplementary immunisation activities in low-income and middle-income countries, 2000–17: a financial modelling study. The Lancet. 4 November 2021. doi: 10.1016/S0140-6736(21)01591-9.
IHME COVID-19 Forecasting Team. Modeling COVID-19 scenarios for the United States. Nature Medicine. 23 October 2020. doi:10.1038/s41591-020-1132-9.
Global Burden of Disease Health Financing Collaborator Network. Health sector spending and spending on HIV/AIDS, tuberculosis, and malaria, and development assistance for health: progress towards Sustainable Development Goal 3. The Lancet. 23 April 2020. doi:10.1016/S0140-6736(20)30608-5.