The document discusses various diseases including how they are transmitted and symptoms. It covers bacterial, viral and parasitic diseases such as bubonic plague, monkeypox, West Nile virus, malaria, HIV/AIDS, smallpox, Ebola, dysentery, hepatitis, whooping cough, cholera, polio, typhoid fever, swine flu, hookworm, rubella, measles, mumps, Oropouche virus, yellow fever, spotted fever, African trypanosomiasis, cancer, and onchocerciasis. Many are transmitted by insects like mosquitoes and fleas or contaminated food and water, while others are spread through contact with bodily fluids. Symptoms