A mother came with her child complaining toothache, joint pain, having history of fever, itching, pallor and generalised weakness. Most probable cause for this may be?

(All the symptoms of child indicate towards iron deficiency anemia) HOOKWORM : One-fourth of the world's population is infected with one of the two hookworm species (A. duodenale and N. americanus). Most infected individuals are asymptomatic. Hookworm disease develops from a combination of factors—a heavy worm burden, a prolonged duration of infection, and an inadequate iron intake—and results in iron-deficiency anemia and, on occasion, hypoproteinemia