Complex sentence: People with the right to medical care in European Economic Area (EEA) nations are also entitled to free treatment by using the European Health Insurance Card; those from other countries with which the UK has reciprocal arrangements also qualify for free treatment.
Split into simpler sentences: People with the right to medical care in European Economic Area (EEA) nations are also entitled to free treatment by using the European Health Insurance Card. Those from other countries with which the UK has reciprocal arrangements also qualify for free treatment.