1547833_eng.pdfWHO guidelines for treating child contacts to infectious pulmonary tuberculosis is isoniazid at a dose of 5mg/kg bodyweight for a total of 6 months."Among household contacts, people living with HIV (and children, regardless of their HIV status) who do not have active TB are candidates for isoniazid treatment to prevent the development of active TB WHO guidelines for Treatment of Tuberculosis "The currently WHO guidelines for treating child contacts to infectious PTB is isoniazid at a dose of 5mg/kg bodyweight for a total of 6 months " -http://health.gov.bz/www/attachments/569_TUBERCULOSIS%20GUIDELINE.pdf">