Introduction. Part-1: Pandemic in the past -- First 1000 Years -- Black Death -- Outbreaks in the new World -- Syphilis, Cholera, and Yellow Fever -- Part-2: Pandemics In The Present -- The World Since 1900: Background to Pandemics in the Present -- Influenza Pandemics -- Coronavirus Pandemics -- Human Immunodeficiency Virus (HIV) -- Vaccines -- Zoonoses -- The Next Pandemic -- The Next Pandemic: Hemorrhagic Fevers -- Part-3:The Next Pandemic: Bioterrorism -- The Next Pandemic: Climate Change -- The Next Pandemic: Antibiotic Resistance -- The Next Pandemic: Challenges and Hopes.