During 1991, the costs of chemoprophylaxis for malaria for three months were 3,607,308 for chloroquine + proguanil and 12,822,363 for mefloquine, whereas treatment costs were much higher at 24,469,387.
The costs of prophylaxis against typhoid, single journey with Ty 21a, Typhoid Vi and Whole cell killed vaccines were 36,925,695, 30,247,947 and 30,343,095 respectively. And the cost of treating cases had the disease not been prevented was only 3,013,955.
The costs of Hepatitis A vaccine and immunoglobulin, were, respectively, 54,471,134 and 20,145,455 for a single journey and 54,471,134 and 70,407,014 for 4 journeys. The cost of treatment was only 6,829,434.
During 1991, the avoided costs of illness were:
(1) 19,116,709 and 22,656,840 for malaria prophylaxis for 3 months with chloroquine + proguanil and mefloquine respectively.
(2) 1,676,747 for prophylaxis against typhoid for a single journey
(3) 3,451,187 and 12,061,666 for prophylaxis against hepatitis A, in the case of a single journey and four journeys (in 5 years) respectively.