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Keyphrases
Pregnant Women
100%
Vaccine Effectiveness
100%
Test-negative Design
100%
Severe COVID-19
100%
Hospital Admission
80%
Delta Variant
70%
Symptomatic Disease
70%
Delta Infection
60%
Maternal Vaccination
50%
Omicron Variant
50%
Omicron Infection
40%
Booster Dose
30%
SARS-CoV-2 Virus
30%
Previous Infection
30%
95% Confidence Interval
30%
Vaccination
10%
Hospital Episode Statistics
10%
Two-dose
10%
Polymerase Chain Reaction Assay
10%
Primary Vaccination
10%
COVID-19
10%
National Immunization Program
10%
Severe Disease
10%
Testing Data
10%
Mild Disease
10%
Maternal Dose
10%
Secondary Use
10%
SARS-CoV-2 Infection
10%
Management System
10%
Infection Symptoms
10%
Late Pregnancy
10%
COVID-19 Vaccination
10%
Third Trimester
10%
Service Data
10%
Maternal Health Services
10%
Design Test
10%
Alpha Variant
10%
Positive Test
10%
Medicine and Dentistry
COVID-19
100%
Omicron Coronavirus Variant
100%
Case-Control Study
100%
Infection
90%
Diseases
80%
Severe Acute Respiratory Syndrome Coronavirus 2
40%
Hepatitis D
30%
Virus
30%
Booster Dose
20%
Third Trimester Pregnancy
20%
Polymerase Chain Reaction
10%
Pregnant Woman
10%
Nursing and Health Professions
Infection
100%
Case-Control Study
100%
COVID-19
100%
Diseases
88%
Severe Acute Respiratory Syndrome
44%
Confidence Interval
33%
Delta Agent Hepatitis
33%
Booster Dose
22%
Wild Type
11%
Polymerase Chain Reaction
11%
Immunology and Microbiology
COVID-19
100%
Omicron Coronavirus Variant
100%
Infectious Disease
90%
Infection
90%
Severe Acute Respiratory Syndrome Coronavirus 2
40%
Hepatitis D
30%
Virus
30%
Booster Dose
20%
Third Trimester Pregnancy
20%
Wild Type
10%
Polymerase Chain Reaction
10%