solved I’m working on a health & medical discussion question and

I’m working on a health & medical discussion question and need an explanation to help me understand better.

What factors influence the ability of infectious agents to produce disease, the severity of the disease, and the outcome of the infection?
2) What are health determinants and how do they contribute to health status?
Responses will be marked based on accuracy, clarity, application of principles from the textbook, and depth of knowledge.
2-  it is dua Sunday Apr18 midnight 
Select one model or theory and apply it to your health topic.
Responses will be marked based on accuracy, clarity, application of principles, and depth of knowledge.
3- discussion board 
Select one population health problem and describe the health determinants of that issue.