Keyword Co-Occurrence Network Graph of the COVID-19 literature as of July 2021

In this post, we present the current focus of the COVID-19 literature, based on publications registered in PubMed as published from June 7 to July 4th.

The analysis is based on 9860 publications, which gave 1241keywords that appear in 5 or more manuscripts, that divide into 6 cluster.

 

Cluster 1

Cluster 2

Cluster 3
Keyword Weighted degree Occurrence Keyword Weighted degree Occurrence Keyword Weighted degree Occurrence
adolescent 234 1164 risk factor 191 949 public health 229 707
children 256 1052 aged, 80 and over 136 852 telemedicine 213 463
anxiety 219 787 severity of illness index 124 841 epidemiology 124 362
communicable disease control 163 719 hospitalization 121 696 covid-19 testing 84 330
mental health 233 713 mortality 173 511 infection control 61 274
depression 186 683 comorbidity 74 469 health policy 59 249
health personnel 128 513 inflammation 101 411 infection 66 197
stress 126 503 treatment outcome 76 402 infectious diseases 79 191
prevalence 89 370 biomarkers 72 382 hospitals 48 190
quarantine 91 324 incidence 81 381 delivery of health care 50 189
physical distancing 55 259 intensive care units 77 373 health services accessibility 34 183
disease outbreaks 57 250 prognosis 77 373 global health 51 176
healthcare workers 74 228 age factors 45 348 personal protective equipment 56 152
students 51 214 hospital mortality 44 314 primary healthcare 30 135
lockdown 109 203 risk assessment 41 263 healthcare disparities 25 127

Cluster 4

Cluster 5

Cluster 6
Keyword Weighted degree Occurrence Keyword Weighted degree Occurrence Keyword Weighted degree Occurrence
animals 146 1033 covid-19 vaccines 226 877 machine learning 48 118
antibodies, viral 94 640 vaccination 225 724 cities 27 108
spike glycoprotein, coronavirus 95 630 vaccine 240 652 air pollution 23 81
antiviral agents 93 580 infant 71 385 algorithms 21 78
ace2 122 550 pregnancy 120 385 artificial intelligence 29 74
rna, viral 70 369 viruses 65 222 air pollutants 15 69
chlorocebus aethiops 37 352 epidemic 66 186 deep learning 39 66
vero cells 35 329 zoonosis 34 161 particulate matter 15 66
antibodies, neutralizing 41 325 models, theoretical 30 151 environmental monitoring 10 51
immunoglobulin g 44 313 immunity 34 133 neural networks, computer 7 36
cytokines 62 304 immune response 36 126 beijing 7 32
antibody 78 293 respiratory infections 29 126 prediction 10 28
lung 60 279 influenza, human 27 120 transportation 10 28
host pathogen interaction 36 263 influenza 27 100 radiography, thoracic 6 27
real time polymerase chain reaction 59 249 pregnancy complications, infectious 19 85 radiology 9 23

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/