Flu symptoms are arising because of influenza or the common is also known by the name of the flu and infectious diseases caused by RNA viruses from the family orthomyxoviridae.
Flu not the only attack humans but also animals.
Colds can be caused by an infection from the virus or bacteria. If the infection is so cold that accompanies the beginning symptoms of disease. The cause allergic reactions because of alergen (dust, fiber, fur, etc.) with the body's defense substances causing substances released mediators. This reaction resulted in swelling of mucous in the nose such as nasal congestion, increased mucus sekresi-sneezing and sneezing.
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