| longitudinal evaluation of repellent activity of ocimum gratissimum (labiatae) volatile oil against simulium damnosum. | to determine the repellent activity of ocimum gratissimum volatile oil against simulium damnosum (blackflies), a 12 month (january-december 2003) field study was conducted in three onchocerciasis endemic communities (idomido, obio camp, and ikot adaha) in ini local government area of akwa ibom state, nigeria. the result revealed that topical application of 20% (v/v) concentration of the oil with liquid paraffin as a base, reduced the biting rate of s. damnosum by 90.2, 81.6, and 79.7%, in idomid ... | 2006 | 16830713 |