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[Prevalence of microbiologically-confirmed influenza in patients with influenza-like illness in primary care and clinical and epidemiological characteristics].


ABSTRACT:

Objective

We evaluated the prevalence of microbiologically-confirmed influenza infection among patients with influenza-like symptoms and compared the clinical and epidemiological characteristics of patients with and without influenza infection.

Methods

Retrospective study of a cohort of patients with influenza-like symptoms from 2016 to 2018 who participated in a clinical trial in thirteen urban primary centres in Catalonia. Different epidemiological data were collected. Patients rated the different symptoms and signs on a Likert scale (absent, little problem, moderate problem and severe problem) and self-reported the measure of health status with the EuroQol visual analogue scale. A nasopharyngeal swab was taken for microbiological isolation of influenza and other microorganisms.

Results

A total of 427 patients were included. Microbiologically confirmed influenza was found in 240 patients (56.2%). The percentage of patients with moderate-to-severe cough, muscle aches, tiredness and dizziness was greater among patients with microbiologically confirmed influenza. The self-reported health status was significantly lower among patients with true flu infection (mean of 36.3 ± 18.2 vs 41.7 ± 17.8 in patients without influenza; p<0.001).

Conclusions

Clinical findings are not particularly useful for confirming or excluding the diagnosis of influenza when intensity is not considered. However, the presence of moderate-to-severe cough, myalgias, tiredness and dizziness along with a poor health status is more common in patients with confirmed flu infection.

SUBMITTER: Moragas A 

PROVIDER: S-EPMC8638842 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Publications

[Prevalence of microbiologically-confirmed influenza in patients with influenza-like illness in primary care and clinical and epidemiological characteristics].

Moragas A A   Garcia-Sangenís A A   Prats Escudero A A   Bayona Faro C C   Hernández Ibáñez R R   Brotons C C   Vilella T T   Puig M M   Freixedas Casaponsa R R   Cobo Guerrero S S   Pera H H   van der Velden A W AW   Butler C C CC   Llor C C  

Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia 20210613 5


<h4>Objective</h4>We evaluated the prevalence of microbiologically-confirmed influenza infection among patients with influenza-like symptoms and compared the clinical and epidemiological characteristics of patients with and without influenza infection.<h4>Methods</h4>Retrospective study of a cohort of patients with influenza-like symptoms from 2016 to 2018 who participated in a clinical trial in thirteen urban primary centres in Catalonia. Different epidemiological data were collected. Patients  ...[more]

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