The book When Plague Strikes written by James Cross Giblin focuses on 3 different plagues; The Black death (Bubonic Plague), smallpox, and AIDS. The black death is a bacteria transmitted through flea bites. The symptoms are headaches, weakness, staggered walking, fatigue, swelling armpits, mouth gaped, a fast heartbeat, uncontrolled arm and leg movements, and blackened skin. When this plague first broke out in the black sea, people blamed the Italians for the spread. So the natives gathered an army to attack Italian trading posts. During the small battle, the natives ended up having to withdraw. However, after it was over, the natives threw the dead bodies of infected soldiers over a barrier towards Italy. They hoped to infect the italians. As it turns out, it did. The black death broke out in Italy. Italian authorities sent the militia to wall up houses that the black death victims lived in. They hoped this would prevent transmission. At first, people thought it was caused by a series of earthquakes that released poisonous fumes from Earth's core. Others thought the devil caused it. While many thought that Southern winds and climate changes had carried the disease North. Venice’s population went from 130,000 to 70,000 is 8 months. Also, almost 30% of Europeans had died from the black death. Today we use antibiotics and sanitation to prevent this bacteria. Another plague that the book describes is Smallpox. Smallpox is a virus that is transmitted through the air. The symptoms vary from a rash starting at the face and running down the rest of the body, to fevers. headaches, blisters, and internal bleeding. Smallpox can even sometimes leave you blind. When it first broke out in India, people thought that there was a Goddess that could control smallpox. They believed she could either heal people of it, or spread it and make it worse. The Chinese also soon began believing in a similar Goddess. To prevent the disease from spreading, people used inoculation. Inoculation was the process of putting dust from scabs of infected victims into people noses, then healing those people right away. After this, the person was immune to smallpox. In Tenochtitlan, at least one fourth of the population died of smallpox. The last plague the book described was AIDS. The symptoms of AIDS are swollen lymph glands and low T-cell counts. When T-cell counts are low, it is harder for the body to fight off diseases. When people first starting getting these symptoms, only gay people were getting it. So many people who weren’t gay, weren’t worried. However, soon people besides gay people were getting AIDS. As it turns out, AIDS are a blood borne virus transmitted through sex. So many bathhouses and sex clubs were closed to prevent transmission at the time. While science today has created many drugs, vaccines, and remedies that may help and prevent AIDS, nothing is promising. Throughout the book, you learn about these three different types of plagues all throughout different time periods. The author describes how the diseases were at the time, and how they are treatable or untreatable now.