According to tests done on blood donors, more than 3.5 million Ugandans are unknowingly infected with hepatitis B, says Ugandan Ministry of Health commissioner for health services in charge of immunization Issa Makumbi. The minister also points out that many Ugandan children under the age of five have Haemophilus influenzae, a disease which could cause lung and brain damage. Next year, Makumbi is adding the hepatitis B and H. influenzae vaccines to the diphtheria, whooping cough, and tetanus vaccine that children receive.