This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
In Sickle cell trait patients, there is reduced risk of which of the following disease? 
Select and explain. 
A. Typhoid, B. Malaria, C. G-6PD deficiency, D. Filaria
B: Malaria
Answer: B: Malaria 
Explanation: Malaria is not seen in people sickle cell anaemia,thalassemia,G6PD deficiency disorders.Ref.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21st edition page no 236