2856
In three of these patients the infection was clinically unsuspected; in the fourth, cutaneous herpes zoster developed after administration of 300 mg of cytarabine daily for the preceding five days.
 adverse event: developed 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 adverse event: developed 