Diseases / Viruses

1. How do they spread so far?

1.1. Zika virus has 5 confirmed cases in Florida when it wasn't anywhere in the USA

1.2. Ebola is mainly in Africa but a few cases were reported in Texas

2. What causes them?

2.1. does the processed food we eat cause disease?

2.2. Could it be from airplane travel internationally

3. Why don't we have a cure for some?

3.1. We can treat HIV but not cure it

3.2. We don't have a cure for cancer

3.3. How close are we to a cure?

4. How did they start?

4.1. are there a lot of new diseases we don't know about?