I remember doing this event and I am comfortable saying 5 dropped. However, I truly believe the number is closer to 10.
Please reference the following post:
By order of Governor Kattasrophe, the city of Moonglow and the surrounding island are hereby under quarantine until further notice due to an outbreak of rabies. The citizens of Moonglow are in need of food and supplies. Other cities that are able to assist are asked to do so. It is hoped by...