Thema
coronavirus disease
severe acute respiratory syndrome coronavirus 2
965
COVID-19
914
SARS-CoV-2
910
viruses
807
respiratory infections
721
Journal Article
602
zoonoses
587
Medicine
310
R
310
Infectious and parasitic diseases
305
2019 novel coronavirus disease
252
Research Support, Non-U.S. Gov't
243
coronavirus
198
SARS
193
United States
115
Review
86
coronaviruses
83
Antibodies, Viral
64
COVID-19 Vaccines
63
vaccine-preventable diseases
57
Research Support, N.I.H., Extramural
56
Letter
54
epidemiology
53
Case Reports
47
Research Support, U.S. Gov't, P.H.S.
36
Japan
30
bacteria
29
RNA, Viral
28
Omicron
27
South Korea
26
transmission
25
vaccines
25
public health
23
seroprevalence
23
surveillance
23
China
22
influenza
22
Brazil
21
Spike Glycoprotein, Coronavirus
20
pandemic
20
Hong Kong
19
vaccination
19
Research Support, U.S. Gov't, Non-P.H.S.
18
antibodies
18
Germany
16
contact tracing
16
severe acute respiratory syndrome
16
Antibodies, Neutralizing
15
healthcare workers
15
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