contractor agrees to provide written notice to company within 24 hours of learning of any stewardable case of malaria experienced by any contractor or subcontractor personnel providing services to company . for purposes of this notification requirement, a "stewardable case of malaria" shall include any death as a result of malaria whether previously diagnosed or not ; a diagnosed case of malaria in a semi-immune person (i.e, a person born and raised to the age of at least 5 years in location that has similar intensity of transmission as the location of the current malaria exposure who has not been away from such exposure for more than 12 months preceding the current period of exposure), which also includes any one of the following: 1) hospitalization, 2) 5% or higher level of parasitemia, or 3)meeting the world health organization(WHO) criteria for severe malaria ; and any diagnosis of malaria in a non-immune person [anyone other than a "semi-immune person"]