Explore the complex epidemiology of the COVID-19 pandemic in this comprehensive webinar featuring Harvard University's Marc Lipsitch, moderated by Thomas Bortfeld. Delve into key features of the pandemic's spread, focusing on the intricacies of data-generating mechanisms and the challenges they present for effective control measures. Examine issues such as delayed and incomplete reporting, local heterogeneity, and the uncertain effectiveness of various interventions. Learn about innovative approaches to address these challenges, including nowcasting techniques and detailed sensitivity analyses in epidemiological models. Gain insights into the big open questions surrounding COVID-19 epidemiology and their implications for ongoing and future pandemic response strategies.