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.
Avoid the Antibiotics! More than 300 different viruses can cause colds, so each time you have a cold it is caused by a distinct virus (i.e. adenovirus, rhinovirus, parainfluenza virus, coronavirus). A virus is much smaller than a bacteria; it is a tiny cluster of genetic material surrounded by a protein wrapper.