Influenza‐like illness · people aged over 65 years
Influenza vaccine probably leads to lower influenza‐like illness compared with placebo (moderate certainty).
1 finding from 1 review
Pneumonia · people aged over 65 years
1 finding from 1 review
Hospitalisation ‐ not reported · people aged over 65 years
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
All deaths · people aged over 65 years
It is very uncertain whether influenza vaccine changes all deaths compared with placebo (very low certainty).
1 finding from 1 review
Fever · people aged over 65 years
Influenza vaccine showed no clear difference in fever compared with placebo (moderate certainty).
1 finding from 1 review
Nausea · people aged over 65 years
Influenza vaccine showed no clear difference in nausea compared with placebo (low certainty).
1 finding from 1 review
Influenza assessed by laboratory confirmation · healthy, community‐dwelling children younger than 16 years of age
Live attenuated influenza vaccine probably leads to lower influenza assessed by laboratory confirmation compared with placebo or do nothing (moderate certainty).
1 finding from 1 review
Influenza‐like illness · healthy, community‐dwelling children older than 2 years of age
Inactivated influenza vaccine probably leads to lower influenza‐like illness assessed by subjective report compared with placebo or do nothing (moderate certainty).
1 finding from 1 review
Otitis media · healthy, community‐dwelling children older than 2 years of age
Inactivated influenza vaccine showed no clear difference in otitis media assessed by clinical confirmation (inspection of ear… compared with placebo or do nothing (moderate certainty).
1 finding from 1 review
Absence from school · healthy, community‐dwelling children older than 2 years of age
It is very uncertain whether inactivated influenza vaccine changes absence from school compared with placebo or do nothing (very low certainty).
1 finding from 1 review
Number of parents having to take off work during · healthy, community‐dwelling children older than 2 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Hospitalisation ‐ not reported · healthy, community‐dwelling children older than 2 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Fever ‐ not reported · healthy, community‐dwelling children older than 2 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Nausea ‐ not reported · healthy, community‐dwelling children older than 2 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Influenza‐like illness · healthy, community‐dwelling children younger than 16 years of age
Live attenuated influenza vaccine may leads to lower influenza‐like illness assessed by subjective report compared with placebo or do nothing (low certainty).
1 finding from 1 review
Otitis media · healthy, community‐dwelling children younger than 16 years of age
Live attenuated influenza vaccine showed no clear difference in otitis media assessed by clinical confirmation (inspection of ear… compared with placebo or do nothing (moderate certainty).
1 finding from 1 review
Number of children with time off from school during · healthy, community‐dwelling children younger than 16 years of age
It is very uncertain whether live attenuated influenza vaccine changes number of children with time off from school during compared with placebo or do nothing (very low certainty).
1 finding from 1 review
Number of parents having to take off work during · healthy, community‐dwelling children younger than 16 years of age
Live attenuated influenza vaccine showed no clear difference in number of parents having to take off work during compared with placebo or do nothing (low certainty).
1 finding from 1 review
Hospitalisation ‐ not reported · healthy, community‐dwelling children younger than 16 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Fever · healthy, community‐dwelling children younger than 16 years of age
1 finding from 1 review