Consider the following diseases:
1. AIDS (Acquired Immunodeficiency Syndrome)
2. Ebola
3. Influenza
4. Cholera
5. Plague
6. SARS (Severe Acute Respiratory Syndrome)
7. Chikungunya
8. Smallpox
Which of the above are caused by viruses in humans?
1
1, 2, 3, 4 and 5
2
2, 3, 4 and 6
3
1, 2, 3, 6, 7 and 8
4
1, 2, 5, 6, 7 and 8