<prompt> Which of the following isare 1st line antitubercular drugs children-IsoniazidRifampicinPyrazinamideEthambutol  <response>: Park;s Textbook of Preventive and Social Medicine 23rd edition Page no:195 Tb preventive therapy: the dose of a INH chemoprophylaxis is 10 mgkg administered daily for 6 months 