Students at Starehe Girls Centre in Nairobi have been sent home over a yet-to-be-determined disease at the school.The school was this morning shut indefinitely after a disease left over 50 students bedridden and quarantined.The affected girls had a high pitch cough, sneezed and had a low-grade fever.Starehe Girls, in a past statement to newsrooms, had said doctors from the Integrated Disease Surveillance Response Department have collected samples which were being analysed by Kenya Medical Research Institute (Kemri) and the Centre for Disease Control.