Keyphrases
Atypical Presentation
33%
Case-control Study Design
33%
Confounding
100%
Confounding by Indication
33%
Frailty
66%
Functional Decline
33%
Healthcare Database
33%
High Risk
33%
Illness
33%
Increasing Age
33%
Influenza
33%
Influenza Vaccination
33%
Influenza Vaccine Effectiveness
100%
Influenza-like Illness
66%
Laboratory-confirmed Influenza
33%
Multiple Chronic Conditions
33%
Older Adults
100%
Policy Decisions
33%
Protection Mechanism
33%
Respiratory Viruses
33%
Serious Complications
33%
Test-negative Design
66%
Vaccination Rate
33%
Vaccine Effectiveness
66%
Vaccinees
33%
Viral Respiratory Infections
33%
Medicine and Dentistry
Case-Control Study
33%
Design Controls
33%
Disease
66%
Flu Like Syndrome
33%
Frailty
66%
Health Care
33%
Influenza Vaccination
33%
Influenza Vaccine
100%
Multiple Chronic Conditions
33%
Observational Study
66%
Respiratory Disease
33%
Sensitivity and Specificity
33%
Pharmacology, Toxicology and Pharmaceutical Science
Case-Control Study
33%
Disease
66%
Flu Like Syndrome
33%
Frailty
66%
Influenza Vaccine
100%
Multiple Chronic Conditions
33%
Observational Study
66%
Respiratory Tract Disease
33%
Respiratory Virus
33%
Vaccination Policy
66%