Thema
respiratory infections
severe acute respiratory syndrome coronavirus 2
860
SARS-CoV-2
852
COVID-19
848
viruses
750
coronavirus disease
723
zoonoses
635
Journal Article
590
Research Support, Non-U.S. Gov't
258
Medicine
223
R
223
Infectious and parasitic diseases
222
SARS
218
2019 novel coronavirus disease
205
coronavirus
198
United States
117
Review
77
COVID-19 Vaccines
65
Antibodies, Viral
61
coronaviruses
60
epidemiology
56
Letter
55
Research Support, N.I.H., Extramural
55
vaccine-preventable diseases
55
Case Reports
46
China
36
Research Support, U.S. Gov't, P.H.S.
36
Japan
34
Omicron
30
transmission
29
RNA, Viral
28
South Korea
26
bacteria
26
vaccines
25
public health
24
seroprevalence
24
outbreak
22
surveillance
22
influenza
21
Brazil
20
Hong Kong
20
antibodies
20
vaccination
20
Research Support, U.S. Gov't, Non-P.H.S.
19
Spike Glycoprotein, Coronavirus
18
pandemic
17
contact tracing
16
Germany
15
BNT162 Vaccine
14
Comment
14
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