PMC:7781502 / 4984-5781 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7781502","sourcedb":"PMC","sourceid":"7781502","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7781502","text":"In the first half of 2020, the total number of articles published on PubMed equaled 858,641. Overall, we identified 27,815 articles on COVID-19, which constitutes 3.24% of all publication in this time. Among those we found 18,225 (65.52%) original articles, 2,449 (8.8%) reviews, 69 (0.25%) systematic reviews with meta-analysis, and 171 (0.61%) guidelines. The remaining 6,901 (24.81%) positions were letters to the editors, commentaries, errata, or unclassified. In a per-month analysis we found that in January, two articles (0.007%) on COVID-19 were indexed, 37 (0.13%) in February, 620 (2.23%) in March, 2,514 (9.04%) in April, 5,527 (19.87%) in May, and 18,596 (66.85%) in June. From those articles, we retrieved n = 519 preprint publications (n = 319 from medRxiv and n = 200 from bioRxiv).","tracks":[{"project":"LitCovid-PubTator","denotations":[{"id":"86","span":{"begin":135,"end":143},"obj":"Disease"},{"id":"87","span":{"begin":540,"end":548},"obj":"Disease"}],"attributes":[{"id":"A86","pred":"tao:has_database_id","subj":"86","obj":"MESH:C000657245"},{"id":"A87","pred":"tao:has_database_id","subj":"87","obj":"MESH:C000657245"},{"subj":"86","pred":"source","obj":"LitCovid-PubTator"},{"subj":"87","pred":"source","obj":"LitCovid-PubTator"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}]},{"project":"LitCovid-sentences","denotations":[{"id":"T43","span":{"begin":0,"end":92},"obj":"Sentence"},{"id":"T44","span":{"begin":93,"end":201},"obj":"Sentence"},{"id":"T45","span":{"begin":202,"end":357},"obj":"Sentence"},{"id":"T46","span":{"begin":358,"end":464},"obj":"Sentence"},{"id":"T47","span":{"begin":465,"end":684},"obj":"Sentence"},{"id":"T48","span":{"begin":685,"end":797},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"T43","pred":"source","obj":"LitCovid-sentences"},{"subj":"T44","pred":"source","obj":"LitCovid-sentences"},{"subj":"T45","pred":"source","obj":"LitCovid-sentences"},{"subj":"T46","pred":"source","obj":"LitCovid-sentences"},{"subj":"T47","pred":"source","obj":"LitCovid-sentences"},{"subj":"T48","pred":"source","obj":"LitCovid-sentences"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"LitCovid-PubTator","color":"#93daec","default":true},{"id":"LitCovid-sentences","color":"#ece493"}]}]}}