Feasibility of population-based screening of sickle cell disease through the primary health care system in tribal areas of India.

OBJECTIVE

To describe the development and implementation of a population-based screening programme for sickle cell disease (SCD) implemented in 12 SCD-endemic and tribal-dominated primary/community health centres (PHCs/CHCs) across six districts of India.

SETTING

India reports a huge burden of SCD, especially among indigenous (tribal) communities. However, there is no state-led SCD programme in many places, and systematic screening is absent. This situation necessitates developing a model of population screening.

METHODS

This programme was meant to screen all people and was carried out in three tiers. The first tier was a symptomatic survey carried out by community health workers. Regular health workers then screened those referred by sickle cell solubility test at sub-health centres as the second tier. The third tier was confirmation by haemoglobin electrophoresis at PHCs/CHCs. Communities were mobilised and prepared to accept the screening. Capacity building of health facilities was ensured through training and supply of equipment and material.

RESULTS

Initial observation based on six months' data revealed that out of the 110,754 tribal population of 12 PHCs/CHCs, 8418 (7.6%) were identified in the symptomatic survey. Subsequently, 9416 people, including the above 8418, underwent the solubility test, and 2607 (27.7%) were found to be positive. Of these, 1978 (78.9%) underwent electrophoresis. About 64.2% were found to be positive for sickle haemoglobin (233 (18.4%) SCD and 1036 (81.6%) SCD trait).

CONCLUSIONS

The study demonstrates the feasibility of establishing a population-based screening programme in the primary health care system. It is easy to implement in tribal habitations as part of the proposed national SCD/haemoglobinopathies programme.