The following diseases are of viral origin:
- Yellow fever: Aedes mosquito-borne, caused by the Yellow fever virus, targeting the liver and potentially causing jaundice.
- Hepatitis B: Resulting from the Hepatitis B virus, it impacts the liver, potentially progressing to chronic liver disease or cancer.
- Chickenpox: Caused by the Varicella-zoster virus, manifesting as itchy blisters and capable of reactivating as shingles.
- Rabies: Caused by the Rabies virus, transmitted via animal bites, it attacks the nervous system, leading to fatal encephalitis if left untreated.