Current HIV diagnostic testing still misses a significant number of people with early HIV infections.
Tuberculosis, like cancer, is not just one disease but manifests in many different ways in different parts of the body.
Acute febrile illness is a broad clinical syndrome, making diagnosis and treatment particularly difficult.
Hepatitis C Virus remains a public health problem due to its asymptomatic and nonspecific nature and can lead to hepatocellular carcinoma and cirrhosis.
Malaria is a life-threatening disease that often presents with non-specific symptoms and if left untreated can lead to severe complications and death.