Influenza vaccine

Published by Pinika Patel on Jul 22, 2019

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Abstract

Language

en

PICOS

PICO 1.1

Population
Healthy individuals aged 16 to 65 years, irrespective of influenza status in community-based studies in North America, South America, and Europe (1969 to 2009). Studies which had more than 25% of individuals outside the age range were excluded. Pregnant women were included together with their newborns. 52 clinical trials in over 80,000 people. Note 15 trials were industry funded (29%).
Intervention
Inactivated parenteral influenza vaccine
Comparator
placebo or 'do nothing'
Outcomes

PICO 2.1

Population
Vaccines for preventing influenza in healthy children - Healthy children under 16 years of age in any geographical location. All participants were classified as healthy unless otherwise stated.. Studies that documented the inclusion of participants with chronic illnesses/conditions or immunodeficiency were excluded
Intervention
Influenza vaccine - All vaccine types
Comparator
placebo
Outcomes

PICO 3.1

Population
Elderly (people aged over 65) in community and residential care institutions in the USA and Europe during influenza seasons between 1965 and 2000 - Excluded studies assessing efficacy in selected groups affected by a specific chronic pathology (i.e. diabetes or cardiac disease), as we were interested in the whole population.
Intervention
Influenza vaccines
Comparator
no vaccination: cohort studies in nursing homes
Outcomes

PICO 4.1

Population
People with chronic obstructive pulmonary disease (COPD) - Included studies of adults with COPD, as defined by the American Thoracic Society (ATS 1995), or European Respiratory Society (Siafakas 1995). Also included studies with participants who were defined as having chronic bronchitis.
Intervention
Inactivated influenza vaccine
Comparator
Placebo
Outcomes

PICO 5.1

Population
Influenza vaccines in immunosuppressed adults with cancer
Intervention
Influenza vaccine
Comparator
none
Outcomes

PICO 6.1

Population
Pregnant women
Intervention
Inactivated influenza vaccine
Comparator
No vaccine
Outcomes

PICO 7.1

Population
Children and Adults with Cystic Fibrosis
Intervention
Intranasal live vaccine
Comparator
Intramuscular trivalent inactivated vaccine
Outcomes

PICO 8.1

Population
Vaccines for preventing influenza in children. Children under 16 years of age from any geographical location
Intervention
inactivated influenza vaccination
Comparator
placebo or do nothing
Outcomes