Ancylostoma ceylanicum (Looss, 1911) in a Filipino Woman

The first human case of Ancylostoma ceylanicum is reported from the Philippines. It occurred in a 53-year-old woman from Laoag, Ilocos Norte, P. I. Twenty-three worms (12 females and 11 males) were recovered. No previous record is known of Ancylostoma ceylanicum (Looss, 1911) as a human parasite in the Philippines. However, Tubangui's (1947) checklist of parasitic worms reported in the Philippines includes Ancylostoma braziliense (de Faria, 1910) as a human parasite. A 53-year-old female patient from Laoag, Ilocos Norte, Philippines, was referred to one of us (B.C.C.) for diagnosis and treatment. Two hours after administration of atebrine, 3 ft of strobila with intact scolex of Taenia saginata and 23 hookworms (11 males, 12 females) were recovered. The hookworms were fixed in 10% formalin. Six female worms and four males were sent to the senior author for study. The worms were transferred to 70% glycerine alcohol and examined in phenolalcohol solution. Measurements are averages in microns unless otherwise stated.