Fig. 4
The most frequent MeSHs assigned coronavirus-related articles before and during the SARS epidemic.
The term “coronavirus” and each shown subheadings were searched in the “title/abstract” of articles indexed in 2002 and 2003. The left and right columns show the number of records, and the lines connect the same subheadings in these two years. The terms “organization,” “numerical data,” and “prevention” stand for organization & administration, statistics & numerical data, and prevention & control, respectively