9781422276150

Type of Germs Germs are present everywhere: in the air, on the surface of our body, inside the body, in soil, on toys, floors, and counters. The four major categories of germs include: bacteria, viruses, fungi, and protozoa. They can enter into plants, animals, and humans, and can cause various diseases. These germs spread through air or by touch. If someone is suffering from a cold, his sneezing spreads germs in the air. This is how other people also catch the cold by coming in contact with a sick person. How do Germs Cause Disease? Germs multiply once inside our body. They start eating up the nutrients, consuming the energy of the cells, and producing toxins. These toxins are poisonous and cause infections in the body, which may result in sniffles, flu, or vomiting. In response to these infections, our immune system springs into action and activates our white blood cells. For instance, in fighting off the common cold, the body might react with fever, coughing, and sneezing.

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