(A) Germs cannot spread from one person to another. (B) You can do several things to prevent germs from making you sick. (C) Washing your hands isn't very important. (D) Bacteria cannot grow on food.

Did you know that the idea of germ theory was developed in the 19th century? Pioneers like Louis Pasteur and Robert Koch showed us that tiny microorganisms could cause diseases, fundamentally changing the way we approach health. Before this, many believed that illnesses were caused by miasma or "bad air!" To keep those pesky germs at bay, it's essential to wash your hands frequently with soap and water for at least 20 seconds. Don't forget to clean surfaces regularly and avoid touching your face, especially when you're out and about. These little habits can make a big difference in staying healthy!