In this post, we present the current focus of the COVID-19 literature, based on publications registered in PubMed as published from February 8th to March 7th. During this time, there were 9741 publications, and 654 keywords occurred in ten or more manuscripts. The keywords divided into 7 clusters. To create the map, we used the LinLog method.
In the table below, we have listed the 10 most central keywords in each cluster.
| Cluster 1 | Cluster 2 | Cluster 3 | Cluster 4 | Cluster 5 | Cluster 6 | Cluster 7 |
| severity of illness index | pandemic | mental health | infant | female | china | adult |
| animals | cross-sectional studies | anxiety | antibodies, viral | male | italy | young adult |
| covid-19 vaccines | surveys and questionnaires | depression | cohort studies | middle aged | incidence | adolescent |
| prognosis | public health | quarantine | covid-19 testing | aged | spain | children |
| vaccine | communicable disease control | stress, psychological | pregnancy | aged, 80 and over | cities | child, preschool |
| intensive care units | united states | stress | covid-19 nucleic acid testing | retrospective studies | models, statistical | age factors |
| mortality | telemedicine | lockdown | prevalence | risk factor | poland | sex factors |
| treatment outcome | health personnel | india | time factors | hospitalization | air pollution | israel |
| spike glycoprotein, coronavirus | epidemiology | adaptation, psychological | immunoglobulin g | comorbidity | aerosols | age distribution |
| antiviral agents | health knowledge, attitudes, practice | quality of life | sensitivity and specificity | risk assessment | england | influenza vaccines |
To open the map directly in VOSviewer, please use the Keyword co-occurrence MAP and NET files from March, available through the Open Science Foundation (OSF) repository: https://osf.io/54gqw/