IMMUNOLOGY

Detailed explanation-1: -It is estimated that about 500 million people or one-third of the world’s population became infected with this virus. The number of deaths was estimated to be at least 50 million worldwide with about 675, 000 occurring in the United States.

Detailed explanation-2: -Influenza-more specifically the Spanish flu-left its devastating mark in both world and American history that year. The microscopic killer circled the entire globe in four months, claiming the lives of more than 21 million people.

Detailed explanation-3: -The 1918 flu pandemic, also known as the Great Influenza epidemic or by the common misnomer of the Spanish flu, was an exceptionally deadly global influenza pandemic caused by the H1N1 influenza A virus.

Detailed explanation-4: -This was certainly the case with the influenza pandemic of 1918-1919, which was one of the worst contagion crises in the history of humankind. Around the world, anywhere from 40 to 100 million people died, according to various estimates, with 500, 000 to 750, 000 deaths in the United States alone.

Detailed explanation-5: -The Spanish flu was a pandemic-a new influenza A virus that spread easily and infected people throughout the world. Because the virus was new, very few people, if any, had some immunity to the disease. From 1918 to 1919, the Spanish flu infected an estimated 500 million people globally.

Detailed explanation-6: -Most influenza deaths were caused by complicating pneumonia which, as there were no antibiotics in 1918, could only be managed expectantly. It was not until the early 1930s that the viral cause of influenza was discovered, so treatment in the large Base Hospitals was largely supportive.