Fig. 4
From: Outbreaks of publications about emerging infectious diseases: the case of SARS-CoV-2 and Zika virus
The proportion of preprint publications and peer-reviewed publications for SARS-CoV-2 (SARS-CoV-2) and Zika virus (Zika virus) research over time (a) and by study design for SARS-CoV-2 (b). SARS-CoV-2: Severe acute respiratory syndrome coronavirus 2