2784
We report the case of a patient with chronic hepatitis C infection who developed severe anaemia during antiviral treatment with peginterferon alfa/ribavirin when oseltamivir was added to treat influenza.
 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 