Fig. 1.

Growth everywhere. Publications by year for “RNA virus metagenomics” (A) and “virome” (B) over the past decade using the “Results by Year” graph from Pubmed. Number of viral species (C), genera (D), and families (E) assigned by the ICTV over the past four decades (ICTV, 2017a, ICTV, 2017b). Changepoint analysis with the “at most one change” statistical test was significant at year 1996 for genera and family data and 2015 for species data (“changepoint, ” n.d.).