“…of their patients and that toxic reactions were twice as common in women as in men, but none had occurred in children. Heyworth and Helm (1960) stated that thirty neurotoxic reactions occurred in 148 of their patients and the incidence was one in five under the age of 50 and one in three over the age of 50. Riches (1954a) stated that, of 150 patients treated with streptomycin 36 per cent.…”