Influenza, symptoms and associated factors among positive cases
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Abstract
Introduction: Influenza is a global highly transmissible illness which affects millions of persons every year generating a considerable burden in terms of hospitalizations and deaths. Influenza can also become pandemic and strike all the population, including the persons who are considered as low risk. Therefore, an epidemiological monitoring can allow more timely detections and interventions.
Objective: To identify the relationships between the positive cases of influenza and the diverse factors and socio-demographic characteristics of the analyzed population.
Methodology: This is a transversal study in which 1 021 suspicious cases of influenza were studied. Raw associations and the statistical significance (Chi square) were calculated.
Results: Regarding the positive cases, 63 % were type A, while 54 % were subtype AH3 specifically. With greater impact on the 19-36 and 0-18 years old age groups, which correspond to 60% of the positive cases.
Discussion: Like in the 2009 H1N1 influenza A pandemic, affected age groups continue to be considered low risk and do not receive vaccination. Regarding the symptomatology, 98 % of the cases showed cough, while 86 % showed fever, two cardinal signs for the operational definition of influenza like illness.
Conclusion: It is very important to thoroughly consider the characteristics of the confirmed cases of influenza to design and implement better addressing strategies.
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