You are giving a speech in front of the class, but you keep hearing someone coughing or sneezing. and get fabrics. Common symptoms of the common cold. The common cold is a viral infection that mainly affects the nose and throat. The common cold can be caused by over 100 things, and the fact that it's contagious makes it even worse. With so many ways to transmit it, it's no wonder it's called the common cold. The common cold is a viral infection that can be caused by numerous things, such as droplets in the air and eating or touching your mouth or eyes without washing. your hands. The reason you get so sick is because the virus attaches itself to some part of your respiratory tract. The body then sends white blood cells to get rid of them. In most cases the white blood cells fail, so the body sends more, and that's why inflammation occurs. Since colds are very contagious, practically no one is safe, at least completely. Children are the most susceptible to the common cold because they do not have a strong immune system to get rid of the virus. The children are also ten years old...