Predisposing factors for complicated malaria in Cauca Department, Colombia

Abstract

Introduction: Malaria is a parasitic infection caused by protozoa of the genus Plasmodium. This condition may lead to organ dysfunction. Despite the actions implemented to control and prevent malaria, it continues to be a public health problem contributing to morbidity and mortality, mainly in tropical countries.

Objective: Identify the predisposing factors for complicated malaria in Cauca Department, Colombia.

Methods: An observational non-paired case–control study was conducted in Cauca Department in the period 2016-2019. The study sample was 445 patients notified to the National Public Health Surveillance System. Patients with complications were defined as cases (n= 89). Each case was assigned four controls (n= 356). Information about complicated cases was contrasted with the medical records.

Results: Of the total population studied (n= 445), 281 were men (63.1%) and 397 were from Cauca Department (89.2%). Mean age was 28.34 years. Ninety-nine patients required hospitalization (22.2%) and three died (0.7%). Sixty-one of the complicated patients were infected by P. falciparum (68.5%). The following factors were associated to complications: imported cases (p= 0.000), black ethnic group (p=0.000), treatment after three days (p= 0.000), urban area of residence (p= 0.025), contributory regime (p=0.026), P. vivax (p= 0.000) and presence of gametocytes (p=0.000).

Conclusions: Actions should be implemented concerning geographic location, inefficient hospital networks and insufficient knowledge about the disease, among other factors. Lack of studies about malaria and its complications limit decision making.