Person having heterozygous sickle cell trait are protected from infection of:: (A) P. falciparum, (B) P. vivax, (C) Pneumococcous, (D) Salmonella
Answer is A. - People who are heterozygous to sickle cell trait (HbS) are protective against plasmodium falciparum,. - In this condition, parasites grow poorly/die d/tlow oxygen concentrations. Conditions providing protection against malaria G6PD deficiency Thalassemia Sickle cell disease Absence of DUFFY antigen Pyruvate kinase deficiency HbC