Frequency of major ABO blood-group-system and the Rh factor in six rural municipalities in Antioquia and the Atrato Medio, Colombia, 2005

Abstract

Introduction

Frequencies of ABO sanguineous groups and Rh factor are needed for institutions like blood Banks and organisms ordered of recollection or distribution of blood components to different transfusion services.

Objective

This research was carried out in order to determine the frequency of the main sanguineous groups of ABO system and Rh factor in participants living in rural area of Antioquia and in the Atrato Medio, in 2005.

Materials and methods

A descriptive retrospective study carried out with 5.627 participants proceeding from the rural area of the Antioquia and the Atrato Medio who were part of the campaign “Te apoyo Antioquia” in 2005. The collected information was analyzed statistically using software Epi-Info 2000.

Results

The frequencies of the sanguineous groups A, B, AB and O were of 26.7%, 9.7%, 1.5%, 62.1% respectively.

93.1% of the population displayed positive Rh, while the 6.9% correspond to negative Rh factor. Additionally, it was observed that the O positive group was the more frequent with 57.5% while the negative sanguineous AB group was the less frequent.

Conclusions

The frequencies of the sanguineous ABO groups that found in the rural area of Antioquia and the Atrato Medio in 2005 are similar to the ones obtained by other authors in 1996 and 2006. The frequencies of the positive Rh factor found are superior to the ones obtained by the researchers.