Rheumatoid factor in cases of rheumatic fever and parasitic infestation in children.

The incidence of rheumatoid factor in inflammatory disorders of connective tissue, particularly rheumatoid arthritis, has been discussed by Ziff (1957), Black, Goldin, Poske, and Malmed (1959), Bywaters, Carter, and Scott (1959), Kellgren and Ball (1959), Dixon (1960), and Hill and Greenbury (1965), and in other rheumatic and non-rheumatic diseases by Ziff (1957), Kellgren and Ball (1959), and Bartfeld (1960). There have been few reports of its incidence in rheumatic fever and its occurrence in parasitic infestation has not been investigated, Both rheumatic fever and parasitic infestation are highly prevalent among children in Egypt, and a study on the incidence of rheumatoid factor in these conditions is now reported.