There are many possible reasons for this. Here are a few potential factors:

1. Lack of resources: Some countries may have limited access to healthcare facilities and medical professionals, making it difficult to provide comprehensive healthcare services to all citizens.

2. Poverty: Poverty can prevent individuals from accessing healthcare services due to financial constraints. This can result in a lack of preventive care and early detection of diseases, leading to poorer health outcomes.

3. Education: Lack of education and health literacy can contribute to poor health outcomes. Without understanding the importance of preventive measures and healthy behaviors, individuals may not prioritize their health or seek appropriate medical care when needed.

4. Infrastructure: Inadequate healthcare infrastructure, such as a lack of hospitals, clinics, and medical equipment, can hinder the delivery of healthcare services to the population.

5. Cultural and social factors: Cultural beliefs, social norms, and stigma associated with certain health conditions may prevent individuals from seeking medical care or adhering to treatment regimens.

6. Political and economic factors: Political instability, corruption, and economic challenges can impact the healthcare system's ability to provide quality care to all citizens.

It is important to note that these factors can be interconnected and vary significantly from country to country. Additionally, addressing these issues requires a multi-faceted approach involving government policies, international collaborations, and community engagement.