Learn about Alexandra Michelle: her birthday, what she did before fame, her family life, fun trivia facts, popularity rankings, and more. Fun facts: before fame, family life, popularity rankings, and more.
Viruses cause such respiratory infections as the common cold (rhinovirus), the flu (influenza), some pneumonias and bronchiolitis (respiratory syncytial virus, or RSV). It can be difficult to determine whether you have a viral or bacterial infection because the symptoms are often similar.
The Common Cold. The Common Cold is caused by a virus. There are over 200 known cold causing viruses the most common being the human rhinovirus of which there are over 100 different strains or serotypes causing about 50% of all colds &plusmn 20%. The remaining 30% to 70% of colds are caused by other viruses.What matters here is that.he Common Cold is caused by a virus. There are over 200 known cold causing viruses the most common being the human rhinovirus of which there are over 100 different strains or serotypes causing about 50% of all colds &plusmn 20%. The remaining 30% to 70% of colds are caused by other viruses. What matters here is that.