You have just finished investigating a disease outbreak at a summer picnic party. Out of 100 total attendees, a total of 50 individuals became ill. Of these, 48 individuals developed vomiting and nausea 4 to 6 hours after the picnic. No one developed a fever. Two elderly individuals, however, had complications leading to a more severe form of the illness and had to be hospitalized. After the lab tests were conducted, the infectious agent was identified. The lab tests also revealed that 75% of all the individuals attending the party had been infected. Required:
What is the pathogencity of the infectious agent?