Influenza Season Assessment, Colombia 2018
DOI:
https://doi.org/10.33610/01229907.2020v2n2a4Keywords:
Influenza A virus, Public health surveillance, Communicable diseases, Sentinel surveillance, Infections of the Respiratory System, VaccinationAbstract
Introduction: In temperate countries the influenza season occurs mainly in winter, while in tropical regions such as Colombia, seasonality is less evident with circulation at any time of the year.
Objective: Describe the characteristics of the influenza season in Colombia during 2018, by measuring indicators of transmissibility, severity and impact.
Methods: Retrospective descriptive study, the indicators of transmissibility, severity and impact of the influenza season in Colombia during 2018 was analyzed. Endemic channels were elaborated; intensity thresholds were calculated using the moving epidemic means (MEM) method and the lines method. Baseline WHO.
Results: The 2018 influenza season in Colombia occurred from week 17 to week 29, with a maximum increase in week 23; the predominant subtype was A (H1N1) pdm09 with 98.0%. It was a season of exceptional transmissibility, with 7 026 693-outpatient consultations and emergencies; hospitalizations in intensive care units exceeded the historical upper limit with 22,748 hospitalizations and an increase of 10.3% compared to 2017. The severity and impact were high, with a predominance of deaths in people older than 40 years (63.9%), 65.3% of deaths had criteria for presenting complications from influenza.
Conclusions: The influenza season in Colombia in 2018 presented an exceptional transmissibility, with high severity and impact indicators; similar to the presented during 2013 and 2016. Period with the predominance of A (H1N1) pdm09.
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