Seroprevalencia de la infección por dengue en los municipios de Armenia, Calarcá, La Tebaida y Montenegro en el departamento del Quindío, 2014 / Seroprevalence of dengue infection in the municipalities of Armenia, Calarcá, La Tebaida and Montenegro in Quindío, 2014

Resumen Introducción: El dengue representa un grave problema de salud pública para Colombia y, en el departamento del Quindío, afecta el 90 % de los municipios. Se necesitan estudios actualizados sobre la seroprevalencia en la población general para reforzar las acciones de salud pública. Objetivo: Determinar la seroprevalencia de la infección por dengue en barrios con alta incidencia de dengue en cuatro municipios del departamento del Quindío: Armenia, Calarcá, La Tebaida y Montenegro, en 2014. Materiales y métodos: Se hizo un estudio de prevalencia mediante muestreo probabilístico estratificado y bietápico. Se hizo una encuesta a 658 sujetos residentes del área urbana de los municipios seleccionados y se les tomó una muestra de sangre por venopunción para determinar anticuerpos IgG e IgM contra el virus del dengue. Resultados: La seroprevalencia de anticuerpos IgG en el Quindío fue de 89,4 %; en Armenia fue de 88,7 %, en Calarcá, de 81,5 %, en Montenegro, de 91,8 %, y en La Tebaida, de 97,8 %. La seroprevalencia de anticuerpos IgM en Quindío fue de 14,2 %; en Armenia, de 11,5 %, en Calarcá, de 13,0 %, en Montenegro, de 13,1%, y en La Tebaida, de 28,9 %. Conclusiones: Se evidenció una alta prevalencia de anticuerpos IgG e IgM en los cuatro municipios. En todos los grupos de edad se encontraron personas seropositivas para IgM, lo cual indicaría infección reciente. La seropositividad simultánea para IgM e IgG (12,9 %) puede indicar infección secundaria por otro serotipo del virus o una infección en los tres meses anteriores. Es necesario impulsar estrategias multisectoriales para el control de la transmisión del dengue en el Quindío.

Abstract Introduction: Dengue is a serious public health problem in Colombia; it is prevalent in 90% of the municipalities in Quindío. Studies on its seroprevalence are required to address public health interventions. Objective: To establish the seroprevalence of dengue infection in neighborhoods with high incidence in the municipalities of Armenia, Calarcá, La Tebaida and Montenegro, Quindío, in 2014. Materials and methods: We conducted a probabilistic, stratified, two-stage prevalence study. We interviewed 658 residents in the urban area of the selected municipalities. After they signed the informed consent, we took a blood sample to determine dengue IgG and IgM antibodies. Results: Seroprevalence of IgG in Quindío was 89,4%; in Armenia it was 88,7%, in Calarcá, 81,5%, in Montenegro, 91,8% and in La Tebaida 97,8%. IgM was 14, 2% in Quindío; in Armenia it was 11,5%, in Calarcá, 13,0%, in Montenegro, 13,1% and in La Tebaida, 28,9%. Conclusions: We found a high prevalence of both IgG and IgM in the four municipalities. We had positive results for IgM in all age groups, which suggests recent infection. We also found simultaneous seropositivity for IgG and IgM (12.9%), which may indicate infection by another serotype or presence of infection in the past three months. A multisectoral approach is necessary for dengue control in Quindío.

Analysis of Lethality in Echinococcal Disease

The information on mortality from echinococcosis is important not only for a better understanding of the severity of the disease, but also for evaluating the effectiveness of public health interventions. The aim of this research was to study the causes of mortality from echinococcosis. We have collected and analyzed the materials of 1,470 patients in 10 age - groups in the Republic of Armenia (from 2000 to 2016). To find out the causes of mortality from echinococcosis, we have analyzed the medical histories and protocols of postmortem examinations of 19 deaths from echinococcosis and 17 deaths due to other indirect causes not associated with the parasite. The average annual death rate from echinococcosis is 0.007 per 10,000 population, and the mortality is 1.29 (per 100 patients). The highest mortality occurs in people aged 70–79. Mortality from echinococcosis is also recorded among the unoperated children. The rupture of the parasitic cyst and hepatic insufficiency are major among the direct causes of mortality. Sometimes the hydatid cysts unrecognized during the life were first diagnosed at autopsy. Insufficient qualification of doctors in the field of helminthology, as well as the latent course of the disease or manifestation of minor symptoms in echinococcosis over a long period often led to medical errors. Further decline in mortality can be achieved by early diagnosis, timely hospitalization and treatment before the development of severe complications worsening the prognosis and outcomes of surgical intervention.