An otherwise healthy 10-year-old girl presented to the #primarycare clinic with a 10-day history of multiple itchy #papules on the soles of her feet and on her toes. The #lesions had black dots in the center and were painful. Two weeks earlier, the family had traveled to rural Brazil. During this time, the patient had played in a pigsty without wearing shoes. Sand fleas were removed from multiple lesions. What is the most likely diagnosis?