How many patients immunized against 'monovalent rotavirus' ceased their care plan on 11/23/2013?
immunized against monovalent rotavirus refers to immunizations.DESCRIPTION = 'rotavirus monovalent'; ceased their care plan on 11/23/2013 refers to careplans.STOP = '2013-11-23';
SELECT COUNT(DISTINCT T1.patient) FROM careplans AS T1 INNER JOIN immunizations AS T2 ON T1.patient = T2.PATIENT WHERE T2.DESCRIPTION = 'rotavirus  monovalent' AND T1.STOP = '2013-11-23'