Keyphrases
Influenza
100%
United Kingdom
70%
Influenza-like Illness
54%
Vaccine Effectiveness
52%
Wales
51%
Confidence Interval
45%
Primary Care
39%
COVID-19
34%
Age Groups
31%
Influenza Season
30%
A(H1N1)pdm09
29%
Influenza Vaccination
27%
Surveillance System
25%
Europe
25%
Live Attenuated Influenza Vaccine
24%
Vaccination
23%
Surveillance Data
22%
General Practice
22%
Laboratory-confirmed Influenza
21%
Hospitalization
21%
H1N1
20%
Respiratory Syncytial Virus
20%
Influenza B
20%
Influenza Vaccine
20%
Vaccine Program
20%
Syndromic Surveillance
19%
General Practitioners
19%
Excess Mortality
19%
H3N2
18%
Influenza A
17%
Seasonal Influenza Vaccine
17%
Vaccine Uptake
16%
Influenza Vaccine Effectiveness
16%
Seasonal Influenza
16%
Seroprevalence
15%
Royal College of General Practitioners
14%
Public Health England
14%
Primary School children
14%
Influenza Surveillance
13%
European Countries
13%
Virus
13%
Influenza Virus
13%
Laboratory Confirmation
12%
Test-negative Design
12%
Public Health Response
12%
2009 Pandemic
12%
Odds Ratio
11%
Epidemiology
11%
Influenza Activity
11%
Hospital Admission
11%
SARS-CoV-2 Infection
11%
Vaccination Program
11%
Older Adults
11%
World Health Organization
10%
Syndromic Surveillance System
10%
Practitioner Research
10%
Pandemic Influenza Virus
10%
Health Care Services
10%
Seroepidemiology
9%
Deprivation
9%
Illness
9%
All-cause Mortality
9%
Middle East Respiratory Syndrome Coronavirus (MERS-CoV)
9%
Schools in England
8%
Pneumococcal Disease
8%
Sentinel
8%
H3N2 Virus
8%
Influenza A (H1N1) 2009
8%
Respiratory Infection
8%
Primary School
8%
COVID-19 Pandemic
8%
Respiratory Illness
8%
Disease Incidence
8%
Unvaccinated
8%
Influenza A(H3N2)
8%
Invasive Pneumococcal Disease
8%
Healthcare Workers
8%
Sentinel Network
8%
Cost-effectiveness Analysis
8%
Disease Burden
7%
Streptococcus Pneumoniae
7%
High Risk
7%
Vaccination Coverage
7%
Infection Rate
7%
Vaccine Strain
7%
All Ages
7%
Influenza Pandemic
7%
Acute Respiratory Infection
7%
Northern Ireland
7%
Young children
7%
School-age children
7%
Intensive Care
7%
Laboratory-based Surveillance
7%
Pandemic H1N1 Influenza
7%
Pneumococcal Polysaccharide Vaccine
7%
Secondary Care
7%
Seasonal Influenza Vaccination
6%
Acute Respiratory Distress Syndrome
6%
Epidemiological Characteristics
6%
Heat Wave
6%
Medicine and Dentistry
Influenza Vaccine
61%
Infection
46%
Primary Health Care
40%
Diseases
37%
Public Health
36%
COVID-19
31%
Influenza Vaccination
28%
General Practitioner
28%
Severe Acute Respiratory Syndrome Coronavirus 2
23%
Flu Like Syndrome
23%
Influenza A Virus (H3N2)
20%
Seasonal Influenza
20%
Epidemiologic Surveillance
19%
Influenza A (H1N1)
19%
General Medicine
18%
Surveillance System
17%
Respiratory Disease
15%
Human Respiratory Syncytial Virus
15%
Cohort Analysis
15%
Pandemic Influenza
13%
Respiratory Tract Infection
12%
Household
11%
Pediatrics
11%
Virus
10%
School-Age Children
10%
Odds Ratio
10%
Influenza B
10%
Coronavirinae
10%
Influenza A (H3N2)
9%
Influenza A Virus (H1N1)
9%
Health Service
9%
Health Care
9%
Streptococcus Pneumonia
8%
Pneumococcal Infection
8%
Case-Control Study
8%
High Risk Population
8%
Cost-Effectiveness Analysis
8%
Middle East Respiratory Syndrome Coronavirus
8%
Health Care Cost
8%
2009 H1N1 Influenza
7%
Vaccine Strain
6%
Secondary Care
6%
Observational Study
6%
Influenza A
6%
Emergency Department
6%
Seroprevalence
6%
Cross Sectional Study
6%
Antibiotics
6%
Lower Respiratory Tract Infection
5%
Enterovirus
5%
Time Series Analysis
5%
Prevalence
5%
Pneumococcal Pneumonia
5%
Influenza Virus
5%
Virus Infection
5%
Pathogen
5%
Pneumococcus Polysaccharide
5%
Polysaccharide Vaccine
5%
COVID-19 Vaccine
5%