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/