In this post, we present the current focus of the COVID-19 literature, based on publications registered in PubMed as published from August 2nd to September 5th.
The analysis is based on 10720 publications, which gave 1288 keywords that appear in 5 or more manuscripts, that divide into 5 clusters.
To open the map directly in VOSviewer, please use the Keyword co-occurrence MAP and NET files from September, available through the Open Science Foundation (OSF) repository: https://osf.io/54gqw/
In the table below, we have listed the 20 most central keywords in each cluster.
| Cluster 1 | Cluster 2 | Cluster 3 | Cluster 4 | Cluster 5 |
| adolescent | risk factor | animals | covid-19 testing | covid-19 vaccines |
| children | aged, 80 and over | antibodies, viral | rna, viral | vaccination |
| mental health | infant | spike glycoprotein, coronavirus | viruses | vaccine |
| public health | severity of illness index | ace2 | covid-19 nucleic acid testing | immunogenicity, vaccine |
| anxiety | inflammation | antibodies, neutralizing | nasopharynx | vaccine hesitancy |
| communicable disease control | hospitalization | antiviral agents | real time polymerase chain reaction | safety |
| depression | pregnancy | chlorocebus aethiops | algorithms | influenza, human |
| health personnel | time factors | immunoglobulin g | machine learning | healthcare workers |
| stress | mortality | mice | respiratory infections | vaccines, synthetic |
| telemedicine | prevalence | vero cells | zoonosis | influenza vaccines |
| epidemiology | treatment outcome | cytokines | diagnosis | immunocompromised host |
| disease outbreaks | comorbidity | virus replication | deep learning | vaccines, inactivated |
| quarantine | intensive care units | lung | specimen handling | immunization |
| students | prognosis | mutation | saliva | adaptive immunity |
| lockdown | age factors | protein binding | polymerase chain reaction | patient safety |
| exercise | biomarkers | antibody | mass screening | myocarditis |
| quality of life | risk assessment | viral load | transmission | practice guidelines as topic |
| health policy | hospital mortality | molecular docking simulation | laboratory | immunity, herd |
| infectious diseases | infection | spike protein | artificial intelligence | mass vaccination |
| infection control | ct | antibodies, monoclonal | air pollution | influenza |