Agriculture & Biology
pregnancy outcome
81%
influenza
58%
vaccination
30%
vaccines
21%
influenza vaccines
12%
pregnancy
12%
premature birth
11%
observational studies
10%
pregnant women
10%
fetal development
9%
immunization
8%
income
7%
methodology
2%
Medicine & Life Sciences
Pregnancy Outcome
58%
Human Influenza
53%
Vaccination
46%
Vaccines
13%
Pregnancy
7%
Immunization Programs
6%
Influenza Vaccines
6%
Fetal Growth Retardation
6%
Premature Birth
6%
Income
4%
Observational Studies
4%
Mothers
3%
Mortality
2%
Health
2%
Child
2%
Social Sciences
vaccination
65%
contagious disease
57%
pregnancy
49%
evidence
15%
pregnant women
5%
mortality
4%
low income
4%
scenario
3%
time
3%
expert
3%
cause
3%
health
2%