Thema
Journal Article
145
Research Support, Non-U.S. Gov't
69
China
40
Influenza
29
influenza
25
Influenza Vaccines
21
Research Support, N.I.H., Extramural
20
COVID-19
18
Review
11
Vaccination
10
570
9
Biology
9
Epidemiology
9
vaccination
9
SARS-CoV-2
8
Systematic Review
8
Hospitalization
7
Research Support, U.S. Gov't, P.H.S.
7
Antibodies, Viral
6
Avian influenza
6
COVID-19 Vaccines
6
Meta-Analysis
6
children
6
epidemiology
6
Antiviral Agents
5
Historical Article
5
Influenza A virus
5
Vaccine
5
Vaccines
5
Antibodies, Neutralizing
4
English Abstract
4
HPAI H5N1
4
Influenza-like illness
4
LPAI H7N9
4
Multicenter Study
4
Poultry data
4
Risk factors
4
Spatial epidemiology
4
influenza vaccine
4
viruses
4
Age distribution
3
Aged
3
Air Pollutants
3
Antibody
3
Children
3
Classification
3
Comparative Study
3
Cost-effectiveness analysis
3
Coverage
3
EQ-5D
3
mehr ...