New Delhi, April 22 (IANS) At least 57 staff of Delhi's Baba Saheb Ambedkar hospital were quarantined after a patient, who came in the emergency department, tested positive for coronavirus, the hospital said on Wednesday.According to the hospital, a 40-year-old woman from Jahangirpuri came to the hospital on April 16."She was suspected of Covid-19...She expired on April 18," it saie.The patient was attended by at least 57 staff, including doctors and nurses."The doctors/staff have been advised for quarantine from today." --IANS nks/vd